JHF III U.S. Growth Fund Class I (JSGIX) N-14 Registration statement for investment companies business combination

John Hancock Disciplined Value Fund

POWER OF ATTORNEY

I do hereby constitute and appoint George M. Boyd, Thomas M. Kinzler, Betsy Anne Seel, Alfred P. Ouellette, David D. Barr, Kinga Kapuscinski, or any one of them, my true and lawful attorneys to execute registration statements to be filed with the Securities and Exchange Commission (“SEC”) under the Securities Act of 1933, as amended (the “1933 Act”) and/or the Investment Company Act of 1940, as amended (the “1940 Act”), and to do any and all acts and things and to execute any and all instruments for me and in my name in the capacities indicated below, which said attorneys, or any of them, may deem necessary or advisable to enable John Hancock Disciplined Value Fund (the “Fund”) to comply with the 1933 Act and the 1940 Act, and any rules, regulations and requirements of the SEC, in connection with such registration statements, including specifically, but without limitation, power and authority to sign for me in the capacity indicated below, the Fund’s registration statement on Form N-14 relating to the fund merger listed below and any amendments (including pre- and post-effective amendments) thereto; and I do hereby ratify and confirm all that the said attorneys, or any of them, shall do or cause to be done by virtue of this power of attorney.

Fund Merger
Robeco Boston Partners Large Cap Value Fund into John Hancock Disciplined Value Fund

     IN WITNESS WHEREOF, I have set my hand on this instrument as of the 9th day of September 2008.

Name	Signature	Title
Keith F. Hartstein	/s/ Keith F. Hartstein	President and Chief Executive Officer
Gordon M. Shone	/s/ Gordon M. Shone	Treasurer (Chief Accounting Officer)
James R. Boyle	/s/ James R. Boyle	Trustee
James F. Carlin	/s/ James F. Carlin	Chairman and Trustee
William H. Cunningham	/s/ William H. Cunningham	Trustee
Charles L. Ladner	/s/ Charles L. Ladner	Trustee

Name	Signature	Title
Dr. John A. Moore	/s/ Dr. John A. Moore	Trustee
Patti McGill Peterson	/s/ Patti McGill Peterson	Trustee
Steven R. Pruchansky	/s/ Steven R. Pruchansky	Trustee
Gregory A. Russo	/s/ Gregory A. Russo	Trustee
Stanley Martin	/s/ Stanley Martin	Trustee