Each NFL team is allowed 30 visits from college prospects from out of town schools so they can better prepare for the draft. The Bills brought in 29 before the April 27th deadline:

Pre-Season

Position	Player	School
OT	Cyrus Kouandjio	Alabama
LB	C.J. Mosley	Alabama
RB	Terrance West	Towson
OL	Zack Martin	Notre Dame
OL	Laurent Duvernay-Tardif	McGill University (Canada)
WR	Sammy Watkins	Clemson
OL	Marcus Martin	USC
RB	Jerick McKinnon	Georgia Southern
WR	Mike Evans	Texas A&M
DB	Kyle Fuller	Virginia Tech
TE	Austin Seferian-Jenkins	Washington
RB	Carlos Hyde	Ohio St.
CB	Walt Aikens	Liberty
WR	Odell Beckham	LSU
RB	Terrance Cobb	Cumberlands
CB	Phillip Gaines	Rice
OT	Jake Matthews	Texas A&M
LB	Preston Brown	Louisville
OT	Charles Siddoway	Mississippi St.
TE	Eric Ebron	North Carolina
DE	Scott Crichton	Oregon St.
RB	Jeremy Hill	LSU
DB	Bashaud Breeland	Clemson
CB	Ross Cockrell	Duke
CB	Bradley Roby	Ohio St.
RB	Lache Seastrunk	Baylor
LB	Ryan Shazier	Ohio St.
WR	Cody Latimer	Indiana
TE	Troy Niklas	Notre Dame