The Eagles will play the Raiders in a 2012 Masschusetts Interscholastic Athletic Association Baseball South Division 2 tournament game at 3 p.m., according to the MIAA website.
The winner advances to Monday's quarterfinals at fourth-seed Hopkinton (16-4), which received a first-round bye.
The Eagles (8-12) are seeded last in the 12-team bracket. Wellesley (13-7) is seeded fifth.
Sharon defeated Wellesley in a 2011 MIAA Baseball South Division 2 quarterfinal, 4-0, at Sharon.
"They play, obviously, in a tough league, like we do," Eagles head coach Joel Peckham said.
Sharon will start junior tri-captain and southpaw Jake Fishman on Saturday, Peckham said.
"With Jake on the mound, we can beat anybody," he said.