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VOTE THIS PROXY CARD TODAY!	THREE EASY WAYS TO VOTE YOUR PROXY
	Read the proxy Statement and have the Proxy card at hand.
	TELEPHONE:      Call 1-[888-261-4073] and follow the simple instructions.     INTERNET:       Go to www.[_______].com and follow the on-line directions.                MAIL:       Vote, sign, date and return your proxy by mail.
	If you vote by Telephone or Internet, do not mail your proxy.

ROBECO BOSTON PARTNERS MID CAP VALUE FUND

SPECIAL MEETING OF SHAREHOLDERS — [July 7], 2010
PROXY SOLICITATION BY THE BOARD OF DIRECTORS

The undersigned, revoking previous proxies, hereby appoint(s)                                      ,                                 and                                      , with full power of substitution in each, to vote all the shares of stock of Robeco Boston Partners Mid Cap Value Fund (the “Acquired Fund”) which the undersigned is (are) entitled to vote at the Special Meeting of Shareholders (the “Meeting”) of the fund to be held at [Bellevue Park Corporate Center, 103 Bellevue Parkway, Wilmington, Delaware 19809, on Wednesday, July 7, 2010, at                        a.m., Eastern Time], and at any adjournment(s) of the Meeting. All powers may be exercised by a majority of all proxy holders or substitutes voting or acting, or, if only one votes and acts, then by that one. Receipt of the Proxy Statement dated [April 30, 2010] is hereby acknowledged. If not revoked, this proxy shall be voted on the proposals included in the Proxy Statement.

PLEASE SIGN, DATE AND
RETURN PROMPTLY IN ENCLOSED ENVELOPE

Date                     , 2010
 

Signature(s)	(Sign in the Box)
NOTE: Signature(s) should agree with the name(s) printed herein. When signing as attorney, executor, administrator, trustee or guardian, please give your full name as such. If a corporation, please sign in full corporate name by president or other authorized officer. If a partnership, please sign in partnership name by authorized person.

VOTE THIS PROXY CARD TODAY!

Please fill in box as shown using black or blue ink or number 2 pencil. PLEASE DO NOT USE FINE POINT PENS. x

SPECIFY YOUR DESIRED ACTION BY A CHECK MARK IN THE APPROPRIATE SPACE. THIS PROXY WILL BE VOTED IN FAVOR OF (FOR) PROPOSAL 1 IF NO SPECIFICATION IS MADE BELOW. AS TO ANY OTHER MATTER, THE PROXY OR PROXIES WILL VOTE IN ACCORDANCE WITH THEIR BEST JUDGMENT.

	FOR		AGAINST		ABSTAIN
(1)         To approve an Agreement and Plan of Reorganization between the Acquired Fund and John Hancock Disciplined Value Mid Cap Fund (the “Acquiring Fund”). Under this agreement, Robeco would transfer all of its assets to the Acquiring Fund in exchange for corresponding shares of the Acquiring Fund. These shares would be distributed, as described in the accompanying proxy statement, proportionately to you and the other shareholders of the Acquired Fund. The Acquiring Fund would also assume the Acquired Fund’s liabilities.		o		o		o

PLEASE DO NOT FORGET TO SIGN THE REVERSE SIDE OF THIS CARD.