<?xml version="1.0" encoding="us-ascii"?><InstanceReport xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><Version>2.4.0.8</Version><ReportLongName>110 - Disclosure - Due from related parties</ReportLongName><DisplayLabelColumn>true</DisplayLabelColumn><ShowElementNames>false</ShowElementNames><RoundingOption /><HasEmbeddedReports>false</HasEmbeddedReports><Columns><Column FlagID="0"><Id>1</Id><IsAbstractGroupTitle>false</IsAbstractGroupTitle><LabelSeparator>

</LabelSeparator><CurrencyCode /><FootnoteIndexer /><hasSegments>false</hasSegments><hasScenarios>false</hasScenarios><MCU><KeyName /><CurrencySymbol /><contextRef><ContextID>P03_01_2013To05_31_2013</ContextID><EntitySchema>http://www.sec.gov/CIK</EntitySchema><EntityValue>0000764630</EntityValue><PeriodDisplayName /><PeriodType>duration</PeriodType><PeriodStartDate>2013-03-01T00:00:00</PeriodStartDate><PeriodEndDate>2013-05-31T00:00:00</PeriodEndDate><Segments /><Scenarios /></contextRef><UPS /><CurrencyCode /><OriginalCurrencyCode /></MCU><CurrencySymbol /><Labels><Label Key="CalendarSupplement" Id="0" Label="3 Months Ended" /><Label Key="Calendar" Id="1" Label="May 31, 2013" /></Labels></Column></Columns><Rows><Row FlagID="0"><Id>1</Id><IsAbstractGroupTitle>true</IsAbstractGroupTitle><LabelSeparator>

</LabelSeparator><Level>1</Level><ElementName>us-gaap_DueFromRelatedPartiesUnclassifiedAbstract</ElementName><ElementPrefix>us-gaap_</ElementPrefix><IsBaseElement>true</IsBaseElement><BalanceType>na</BalanceType><PeriodType>duration</PeriodType><IsReportTitle>false</IsReportTitle><IsSegmentTitle>false</IsSegmentTitle><IsCalendarTitle>false</IsCalendarTitle><IsEquityPrevioslyReportedAsRow>false</IsEquityPrevioslyReportedAsRow><IsEquityAdjustmentRow>false</IsEquityAdjustmentRow><IsBeginningBalance>false</IsBeginningBalance><IsEndingBalance>false</IsEndingBalance><IsReverseSign>false</IsReverseSign><FootnoteIndexer /><Cells><Cell FlagID="0" ContextID="" UnitID=""><Id>1</Id><IsNumeric>false</IsNumeric><IsRatio>false</IsRatio><DisplayZeroAsNone>false</DisplayZeroAsNone><NumericAmount>0</NumericAmount><RoundedNumericAmount>0</RoundedNumericAmount><NonNumbericText /><FootnoteIndexer /><CurrencyCode /><CurrencySymbol /><IsIndependantCurrency>false</IsIndependantCurrency><ShowCurrencySymbol>false</ShowCurrencySymbol><DisplayDateInUSFormat>false</DisplayDateInUSFormat></Cell></Cells><ElementDataType>xbrli:stringItemType</ElementDataType><SimpleDataType>string</SimpleDataType><IsTotalLabel>false</IsTotalLabel><UnitID>0</UnitID><Label>Due From Related Parties, Unclassified [Abstract]</Label></Row><Row FlagID="0"><Id>2</Id><IsAbstractGroupTitle>false</IsAbstractGroupTitle><LabelSeparator>

</LabelSeparator><Level>2</Level><ElementName>usbl_DueFromRelatedPartiesTextBlock</ElementName><ElementPrefix>usbl_</ElementPrefix><IsBaseElement>false</IsBaseElement><BalanceType>na</BalanceType><PeriodType>duration</PeriodType><IsReportTitle>false</IsReportTitle><IsSegmentTitle>false</IsSegmentTitle><IsCalendarTitle>false</IsCalendarTitle><IsEquityPrevioslyReportedAsRow>false</IsEquityPrevioslyReportedAsRow><IsEquityAdjustmentRow>false</IsEquityAdjustmentRow><IsBeginningBalance>false</IsBeginningBalance><IsEndingBalance>false</IsEndingBalance><IsReverseSign>false</IsReverseSign><PreferredLabelRole>verboseLabel</PreferredLabelRole><FootnoteIndexer /><Cells><Cell FlagID="0" ContextID="P03_01_2013To05_31_2013" UnitID=""><Id>1</Id><IsNumeric>false</IsNumeric><IsRatio>false</IsRatio><DisplayZeroAsNone>false</DisplayZeroAsNone><NumericAmount>0</NumericAmount><RoundedNumericAmount>0</RoundedNumericAmount><NonNumbericText>              &lt;table border="0" style="clear:both;width:100%; table-layout:fixed;"&gt;  &lt;tr&gt;  &lt;td&gt;&lt;/td&gt;  &lt;/tr&gt;  &lt;/table&gt;    &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt;MARGIN: 0pt 0px; FONT: 10pt Times New Roman, Times, Serif "&gt;  &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt;MARGIN: 0in 0in 0pt; FONT-SIZE: 10pt"&gt;  &lt;table style="clear:both;MARGIN-TOP: 0px; FONT: 10pt Times New Roman, Times, Serif; MARGIN-BOTTOM: 0px"   cellspacing="0" cellpadding="0"&gt;  &lt;tr style="TEXT-ALIGN: justify; VERTICAL-ALIGN: top"&gt;  &lt;td style="TEXT-ALIGN: left; WIDTH: 0.5in"&gt;  &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt"&gt;  &lt;strong&gt;4.&lt;/strong&gt;&lt;/div&gt;  &lt;/td&gt;  &lt;td style="TEXT-ALIGN: justify"&gt;  &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt"&gt;  &lt;strong&gt;&lt;u&gt;Due from related parties&lt;/u&gt;&lt;/strong&gt;&lt;/div&gt;  &lt;/td&gt;  &lt;/tr&gt;  &lt;/table&gt;  &lt;/div&gt;    &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt;TEXT-ALIGN: justify; MARGIN: 0pt 0px; FONT: 10pt Times New Roman, Times, Serif"&gt;  &amp;#160;&lt;/div&gt;    &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt;TEXT-ALIGN: justify; MARGIN: 0pt 0px 0pt 0.5in; FONT: 10pt Times New Roman, Times, Serif"&gt;  Due from related parties consist of:&lt;/div&gt;    &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt;TEXT-ALIGN: justify; MARGIN: 0pt 0px 0pt 0.5in; FONT: 10pt Times New Roman, Times, Serif"&gt;  &amp;#160;&lt;/div&gt;    &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt;MARGIN: 0in 0in 0pt; FONT-SIZE: 10pt"&gt;  &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt;TEXT-ALIGN:Left;"&gt;  &lt;table style="clear:both;BORDER-BOTTOM: #9eb6ce 0px solid; BORDER-LEFT: #9eb6ce 0px solid; MARGIN: 0in 0in 0in 0.5in; WIDTH: 90%; BORDER-COLLAPSE: collapse; OVERFLOW: visible; BORDER-TOP: #9eb6ce 0px solid; BORDER-RIGHT: #9eb6ce 0px solid"   cellspacing="0" cellpadding="0" align="left"&gt;  &lt;tr style="HEIGHT: 12px"&gt;  &lt;td style="TEXT-ALIGN: left; FONT-STYLE: normal; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; VERTICAL-ALIGN: bottom; FONT-WEIGHT: 400"   width="65%"&gt;  &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt"&gt;  &amp;#160;&lt;/div&gt;  &lt;/td&gt;  &lt;td style="TEXT-ALIGN: left; FONT-STYLE: normal; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; VERTICAL-ALIGN: middle; FONT-WEIGHT: 400"   width="1%"&gt;  &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt"&gt;  &amp;#160;&lt;/div&gt;  &lt;/td&gt;  &lt;td style="TEXT-ALIGN: center; FONT-STYLE: normal; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; VERTICAL-ALIGN: bottom; FONT-WEIGHT: 400"   width="11%" colspan="2"&gt;  &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt"&gt;  May 31,&lt;/div&gt;  &lt;/td&gt;  &lt;td style="TEXT-ALIGN: left; FONT-STYLE: normal; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; VERTICAL-ALIGN: middle; FONT-WEIGHT: 400"   width="1%"&gt;  &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt"&gt;  &amp;#160;&lt;/div&gt;  &lt;/td&gt;  &lt;td style="TEXT-ALIGN: center; FONT-STYLE: normal; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; VERTICAL-ALIGN: bottom; FONT-WEIGHT: 400"   width="11%" colspan="2"&gt;  &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt"&gt;  February 28,&lt;/div&gt;  &lt;/td&gt;  &lt;td style="TEXT-ALIGN: left; FONT-STYLE: normal; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; VERTICAL-ALIGN: middle; FONT-WEIGHT: 400"   width="1%"&gt;  &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt"&gt;  &amp;#160;&lt;/div&gt;  &lt;/td&gt;  &lt;/tr&gt;    &lt;tr style="HEIGHT: 12px"&gt;  &lt;td style="TEXT-ALIGN: left; FONT-STYLE: normal; FONT-FAMILY: Times New Roman; BACKGROUND: #ffffff; FONT-SIZE: 10pt; VERTICAL-ALIGN: bottom; FONT-WEIGHT: 400"   width="65%"&gt;  &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt"&gt;  &amp;#160;&lt;/div&gt;  &lt;/td&gt;  &lt;td style="TEXT-ALIGN: left; FONT-STYLE: normal; FONT-FAMILY: Times New Roman; BACKGROUND: #ffffff; FONT-SIZE: 10pt; VERTICAL-ALIGN: middle; FONT-WEIGHT: 400"   width="1%"&gt;  &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt"&gt;  &amp;#160;&lt;/div&gt;  &lt;/td&gt;  &lt;td style="BORDER-BOTTOM: #000000 1px solid; TEXT-ALIGN: center; FONT-STYLE: normal; FONT-FAMILY: Times New Roman; BACKGROUND: #ffffff; FONT-SIZE: 10pt; VERTICAL-ALIGN: bottom; FONT-WEIGHT: 400"   width="11%" colspan="2"&gt;  &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt"&gt;  2013&lt;/div&gt;  &lt;/td&gt;  &lt;td style="TEXT-ALIGN: left; FONT-STYLE: normal; FONT-FAMILY: Times New Roman; BACKGROUND: #ffffff; FONT-SIZE: 10pt; VERTICAL-ALIGN: middle; FONT-WEIGHT: 400"   width="1%"&gt;  &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt"&gt;  &amp;#160;&lt;/div&gt;  &lt;/td&gt;  &lt;td style="BORDER-BOTTOM: #000000 1px solid; TEXT-ALIGN: center; FONT-STYLE: normal; FONT-FAMILY: Times New Roman; BACKGROUND: #ffffff; FONT-SIZE: 10pt; VERTICAL-ALIGN: bottom; FONT-WEIGHT: 400"   width="11%" colspan="2"&gt;  &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt"&gt;  2013&lt;/div&gt;  &lt;/td&gt;  &lt;td style="TEXT-ALIGN: left; FONT-STYLE: normal; FONT-FAMILY: Times New Roman; BACKGROUND: #ffffff; FONT-SIZE: 10pt; VERTICAL-ALIGN: middle; FONT-WEIGHT: 400"   width="1%"&gt;  &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt"&gt;  &amp;#160;&lt;/div&gt;  &lt;/td&gt;  &lt;/tr&gt;    &lt;tr style="HEIGHT: 12px"&gt;  &lt;td style="TEXT-ALIGN: left; FONT-STYLE: normal; FONT-FAMILY: Times New Roman; BACKGROUND: #ffffff; FONT-SIZE: 10pt; VERTICAL-ALIGN: bottom; FONT-WEIGHT: 400"   width="65%"&gt;  &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt"&gt;  &amp;#160;&lt;/div&gt;  &lt;/td&gt;  &lt;td style="TEXT-ALIGN: left; FONT-STYLE: normal; FONT-FAMILY: Times New Roman; BACKGROUND: #ffffff; FONT-SIZE: 10pt; VERTICAL-ALIGN: middle; FONT-WEIGHT: 400"   width="1%"&gt;  &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt"&gt;  &amp;#160;&lt;/div&gt;  &lt;/td&gt;  &lt;td style="TEXT-ALIGN: center; FONT-STYLE: normal; FONT-FAMILY: Times New Roman; BACKGROUND: #ffffff; FONT-SIZE: 10pt; VERTICAL-ALIGN: bottom; BORDER-TOP: #000000 1px solid; FONT-WEIGHT: 400"   width="11%" colspan="2"&gt;  &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt"&gt;  (Unaudited)&lt;/div&gt;  &lt;/td&gt;  &lt;td style="TEXT-ALIGN: left; FONT-STYLE: normal; FONT-FAMILY: Times New Roman; BACKGROUND: #ffffff; FONT-SIZE: 10pt; VERTICAL-ALIGN: middle; FONT-WEIGHT: 400"   width="1%"&gt;  &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt"&gt;  &amp;#160;&lt;/div&gt;  &lt;/td&gt;  &lt;td style="TEXT-ALIGN: center; FONT-STYLE: normal; FONT-FAMILY: Times New Roman; BACKGROUND: #ffffff; FONT-SIZE: 10pt; VERTICAL-ALIGN: bottom; BORDER-TOP: #000000 1px solid; FONT-WEIGHT: 400"   width="1%"&gt;  &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt"&gt;  &amp;#160;&lt;/div&gt;  &lt;/td&gt;  &lt;td style="TEXT-ALIGN: center; FONT-STYLE: normal; FONT-FAMILY: Times New Roman; BACKGROUND: #ffffff; FONT-SIZE: 10pt; VERTICAL-ALIGN: bottom; BORDER-TOP: #000000 1px solid; FONT-WEIGHT: 400"   width="10%"&gt;  &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt"&gt;  &amp;#160;&lt;/div&gt;  &lt;/td&gt;  &lt;td style="TEXT-ALIGN: left; FONT-STYLE: normal; FONT-FAMILY: Times New Roman; BACKGROUND: #ffffff; FONT-SIZE: 10pt; VERTICAL-ALIGN: middle; FONT-WEIGHT: 400"   width="1%"&gt;  &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt"&gt;  &amp;#160;&lt;/div&gt;  &lt;/td&gt;  &lt;/tr&gt;    &lt;tr style="HEIGHT: 12px"&gt;  &lt;td style="TEXT-ALIGN: left; FONT-STYLE: normal; FONT-FAMILY: Times New Roman; BACKGROUND: #ccffcc; FONT-SIZE: 10pt; VERTICAL-ALIGN: bottom; FONT-WEIGHT: 400"   width="65%"&gt;  &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt"&gt;  USBL receivable from Meisenheimer Capital, Inc. (&amp;#8220;MCI&amp;#8221;)  controlling stockholder of USBL, non-interest bearing, due on  demand&lt;/div&gt;  &lt;/td&gt;  &lt;td style="TEXT-ALIGN: left; FONT-STYLE: normal; FONT-FAMILY: Times New Roman; BACKGROUND: #ccffcc; FONT-SIZE: 10pt; VERTICAL-ALIGN: middle; FONT-WEIGHT: 400"   width="1%"&gt;  &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt"&gt;  &amp;#160;&lt;/div&gt;  &lt;/td&gt;  &lt;td style="BORDER-BOTTOM: #000000 1px solid; TEXT-ALIGN: left; FONT-STYLE: normal; FONT-FAMILY: Times New Roman; BACKGROUND: #ccffcc; FONT-SIZE: 10pt; VERTICAL-ALIGN: bottom; FONT-WEIGHT: 400"   width="1%"&gt;  &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt"&gt;  $&lt;/div&gt;  &lt;/td&gt;  &lt;td style="BORDER-BOTTOM: #000000 1px solid; TEXT-ALIGN: right; FONT-STYLE: normal; PADDING-RIGHT: 5px; FONT-FAMILY: Times New Roman; BACKGROUND: #ccffcc; FONT-SIZE: 10pt; VERTICAL-ALIGN: bottom; FONT-WEIGHT: 400"   width="10%"&gt;  &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt"&gt;  -&lt;/div&gt;  &lt;/td&gt;  &lt;td style="TEXT-ALIGN: left; FONT-STYLE: normal; FONT-FAMILY: Times New Roman; BACKGROUND: #ccffcc; FONT-SIZE: 10pt; VERTICAL-ALIGN: middle; FONT-WEIGHT: 400"   width="1%"&gt;  &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt"&gt;  &amp;#160;&lt;/div&gt;  &lt;/td&gt;  &lt;td style="BORDER-BOTTOM: #000000 1px solid; TEXT-ALIGN: left; FONT-STYLE: normal; FONT-FAMILY: Times New Roman; BACKGROUND: #ccffcc; FONT-SIZE: 10pt; VERTICAL-ALIGN: bottom; FONT-WEIGHT: 400"   width="1%"&gt;  &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt"&gt;  $&lt;/div&gt;  &lt;/td&gt;  &lt;td style="BORDER-BOTTOM: #000000 1px solid; TEXT-ALIGN: right; FONT-STYLE: normal; PADDING-RIGHT: 5px; FONT-FAMILY: Times New Roman; BACKGROUND: #ccffcc; FONT-SIZE: 10pt; VERTICAL-ALIGN: bottom; FONT-WEIGHT: 400"   width="10%"&gt;  &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt"&gt;  35,450&lt;/div&gt;  &lt;/td&gt;  &lt;td style="TEXT-ALIGN: left; FONT-STYLE: normal; FONT-FAMILY: Times New Roman; BACKGROUND: #ccffcc; FONT-SIZE: 10pt; VERTICAL-ALIGN: middle; FONT-WEIGHT: 400"   width="1%"&gt;  &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt"&gt;  &amp;#160;&lt;/div&gt;  &lt;/td&gt;  &lt;/tr&gt;    &lt;tr style="HEIGHT: 12px"&gt;  &lt;td style="TEXT-ALIGN: left; FONT-STYLE: normal; FONT-FAMILY: Times New Roman; BACKGROUND: #ffffff; FONT-SIZE: 10pt; VERTICAL-ALIGN: middle; FONT-WEIGHT: 400"   width="65%"&gt;  &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt"&gt;  &amp;#160;&lt;/div&gt;  &lt;/td&gt;  &lt;td style="TEXT-ALIGN: left; FONT-STYLE: normal; FONT-FAMILY: Times New Roman; BACKGROUND: #ffffff; FONT-SIZE: 10pt; VERTICAL-ALIGN: middle; FONT-WEIGHT: 400"   width="1%"&gt;  &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt"&gt;  &amp;#160;&lt;/div&gt;  &lt;/td&gt;  &lt;td style="TEXT-ALIGN: left; FONT-STYLE: normal; FONT-FAMILY: Times New Roman; BACKGROUND: #ffffff; FONT-SIZE: 10pt; VERTICAL-ALIGN: middle; BORDER-TOP: #000000 1px solid; FONT-WEIGHT: 400"   width="1%"&gt;  &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt"&gt;  &amp;#160;&lt;/div&gt;  &lt;/td&gt;  &lt;td style="TEXT-ALIGN: right; FONT-STYLE: normal; FONT-FAMILY: Times New Roman; BACKGROUND: #ffffff; FONT-SIZE: 10pt; VERTICAL-ALIGN: middle; BORDER-TOP: #000000 1px solid; FONT-WEIGHT: 400"   width="10%"&gt;  &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt"&gt;  &amp;#160;&lt;/div&gt;  &lt;/td&gt;  &lt;td style="TEXT-ALIGN: left; FONT-STYLE: normal; FONT-FAMILY: Times New Roman; BACKGROUND: #ffffff; FONT-SIZE: 10pt; VERTICAL-ALIGN: middle; FONT-WEIGHT: 400"   width="1%"&gt;  &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt"&gt;  &amp;#160;&lt;/div&gt;  &lt;/td&gt;  &lt;td style="TEXT-ALIGN: left; FONT-STYLE: normal; FONT-FAMILY: Times New Roman; BACKGROUND: #ffffff; FONT-SIZE: 10pt; VERTICAL-ALIGN: middle; BORDER-TOP: #000000 1px solid; FONT-WEIGHT: 400"   width="1%"&gt;  &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt"&gt;  &amp;#160;&lt;/div&gt;  &lt;/td&gt;  &lt;td style="TEXT-ALIGN: right; FONT-STYLE: normal; FONT-FAMILY: Times New Roman; BACKGROUND: #ffffff; FONT-SIZE: 10pt; VERTICAL-ALIGN: middle; BORDER-TOP: #000000 1px solid; FONT-WEIGHT: 400"   width="10%"&gt;  &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt"&gt;  &amp;#160;&lt;/div&gt;  &lt;/td&gt;  &lt;td style="TEXT-ALIGN: left; FONT-STYLE: normal; FONT-FAMILY: Times New Roman; BACKGROUND: #ffffff; FONT-SIZE: 10pt; VERTICAL-ALIGN: middle; FONT-WEIGHT: 400"   width="1%"&gt;  &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt"&gt;  &amp;#160;&lt;/div&gt;  &lt;/td&gt;  &lt;/tr&gt;    &lt;tr style="HEIGHT: 12px"&gt;  &lt;td style="TEXT-ALIGN: left; FONT-STYLE: normal; FONT-FAMILY: Times New Roman; BACKGROUND: #ccffcc; FONT-SIZE: 10pt; VERTICAL-ALIGN: bottom; FONT-WEIGHT: 400"   width="65%"&gt;  &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt"&gt;  Total&lt;/div&gt;  &lt;/td&gt;  &lt;td style="TEXT-ALIGN: left; FONT-STYLE: normal; FONT-FAMILY: Times New Roman; BACKGROUND: #ccffcc; FONT-SIZE: 10pt; VERTICAL-ALIGN: middle; FONT-WEIGHT: 400"   width="1%"&gt;  &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt"&gt;  &amp;#160;&lt;/div&gt;  &lt;/td&gt;  &lt;td style="BORDER-BOTTOM: #000000 3px double; TEXT-ALIGN: left; FONT-STYLE: normal; FONT-FAMILY: Times New Roman; BACKGROUND: #ccffcc; FONT-SIZE: 10pt; VERTICAL-ALIGN: bottom; FONT-WEIGHT: 400"   width="1%"&gt;  &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt"&gt;  $&lt;/div&gt;  &lt;/td&gt;  &lt;td style="BORDER-BOTTOM: #000000 3px double; TEXT-ALIGN: right; FONT-STYLE: normal; PADDING-RIGHT: 5px; FONT-FAMILY: Times New Roman; BACKGROUND: #ccffcc; FONT-SIZE: 10pt; VERTICAL-ALIGN: bottom; FONT-WEIGHT: 400"   width="10%"&gt;  &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt"&gt;  -&lt;/div&gt;  &lt;/td&gt;  &lt;td style="TEXT-ALIGN: left; FONT-STYLE: normal; FONT-FAMILY: Times New Roman; BACKGROUND: #ccffcc; FONT-SIZE: 10pt; VERTICAL-ALIGN: middle; FONT-WEIGHT: 400"   width="1%"&gt;  &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt"&gt;  &amp;#160;&lt;/div&gt;  &lt;/td&gt;  &lt;td style="BORDER-BOTTOM: #000000 3px double; TEXT-ALIGN: left; FONT-STYLE: normal; FONT-FAMILY: Times New Roman; BACKGROUND: #ccffcc; FONT-SIZE: 10pt; VERTICAL-ALIGN: bottom; FONT-WEIGHT: 400"   width="1%"&gt;  &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt"&gt;  $&lt;/div&gt;  &lt;/td&gt;  &lt;td style="BORDER-BOTTOM: #000000 3px double; TEXT-ALIGN: right; FONT-STYLE: normal; PADDING-RIGHT: 5px; FONT-FAMILY: Times New Roman; BACKGROUND: #ccffcc; FONT-SIZE: 10pt; VERTICAL-ALIGN: bottom; FONT-WEIGHT: 400"   width="10%"&gt;  &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt"&gt;  35,450&lt;/div&gt;  &lt;/td&gt;  &lt;td style="TEXT-ALIGN: left; FONT-STYLE: normal; FONT-FAMILY: Times New Roman; BACKGROUND: #ccffcc; FONT-SIZE: 10pt; VERTICAL-ALIGN: middle; FONT-WEIGHT: 400"   width="1%"&gt;  &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt"&gt;  &amp;#160;&lt;/div&gt;  &lt;/td&gt;  &lt;/tr&gt;  &lt;/table&gt;  &lt;/div&gt;  &lt;/div&gt;  &lt;/div&gt;        </NonNumbericText><FootnoteIndexer /><CurrencyCode /><CurrencySymbol /><IsIndependantCurrency>false</IsIndependantCurrency><ShowCurrencySymbol>false</ShowCurrencySymbol><DisplayDateInUSFormat>false</DisplayDateInUSFormat></Cell></Cells><ElementDataType>nonnum:textBlockItemType</ElementDataType><SimpleDataType>na</SimpleDataType><ElementDefenition>Tabular disclosure refers to due from related parties.</ElementDefenition><ElementReferences>No definition available.</ElementReferences><IsTotalLabel>false</IsTotalLabel><UnitID>0</UnitID><Label>Due From Related Parties [Text Block]</Label></Row></Rows><Footnotes /><IsEquityReport>false</IsEquityReport><ReportName>Due from related parties</ReportName><MonetaryRoundingLevel>UnKnown</MonetaryRoundingLevel><SharesRoundingLevel>UnKnown</SharesRoundingLevel><PerShareRoundingLevel>UnKnown</PerShareRoundingLevel><ExchangeRateRoundingLevel>UnKnown</ExchangeRateRoundingLevel><HasCustomUnits>true</HasCustomUnits><IsEmbedReport>false</IsEmbedReport><IsMultiCurrency>false</IsMultiCurrency><ReportType>Sheet</ReportType><RoleURI>http://www.usbl.com/role/DueFromRelatedParties</RoleURI><NumberOfCols>1</NumberOfCols><NumberOfRows>2</NumberOfRows></InstanceReport>
