Exhibit (d)(b)(9)(i)

BRIGHTHOUSE FUNDS TRUST II

AMENDMENT NO. 1 TO THE INVESTMENT SUBADVISORY AGREEMENT

(Frontier Mid Cap Growth Portfolio)

This Amendment No. 1 to the Investment Subadvisory Agreement (the “Agreement”) dated August 4, 2017, by and between Brighthouse Investment Advisers, LLC (the “Adviser”) and Frontier Capital Management Company, LLC (the “Subadviser”) with respect to Frontier Mid Cap Growth Portfolio, a series of Brighthouse Funds Trust II, is entered into effective the 1^st of January, 2018.

WHEREAS, the Agreement provides for the Subadviser to provide certain investment advisory services for the Adviser, for which the Subadviser is to receive agreed upon fees; and

WHEREAS, the parties wish to amend certain provisions of the Agreement as set forth herein;

NOW, THEREFORE, in consideration of the mutual promises, representations, and warranties made herein, covenants and agreements hereinafter contained, and, for other good and valuable consideration, the receipt and sufficiency of which are acknowledged, the parties agree as follows:

1. Schedule A of the Agreement is amended in whole to read as follows:

Percentage of average daily net assets of the Portfolio assets allocated to the

Subadviser by the Adviser:

0.400% of the first $500 million of such assets plus

0.350% of such assets over $500 million

0.325% of such assets over $850 million

0.300% of such assets over $1.15 billion

2. All other terms and conditions of the Agreement shall remain in full force and effect.

IN WITNESS WHEREOF, the parties have executed this Amendment as of the 15^th day of

December, 2017.

/s/ Kristi Slavin

Kristi Slavin

President, Brighthouse Investment Advisers, LLC

FRONTIER CAPITAL MANAGEMENT

COMPANY, LLC

By: Authorized Officer