After Mager struck out looking, Hendricks delivered what proved to be the game-winning RBI with a single through the right side that scored Lopez and Wallace.

The Crimson’s third run came in dramatic fashion. Lopez doubled to start the fifth inning, and advanced to second on a groundout by Wallace. Then, with Shakir at the plate, Walsh called for a suicide squeeze.

Lopez took off early, and scored when Ohlendorf’s pitch was in the dirt.

“He broke real early,” Walsh said. “I think we lucked out. They had a freshman on the mound that’s a good, strong guy, but I think we rattled him.”

Ohlendorf (6-3) took the loss in five innings of work.

The Crimson’s final two runs came in the sixth. Hendricks led off with a ground -rule double that bounced over the right field fence. San Salvador and Kropf walked to load the bases, bringing up sophomore Marc Hordon. Hordon hit a hard grounder that went under Boran’s glove at short, scoring both Hendricks and San Salvador to give Harvard a comfortable 5-1 lead.

Harvard 2, Princeton 1

at O’Donnell Field Field, Cambridge, MA

Harvard (21-22, 16-7) 100 100 000—2 9 1

Princeton (22-23, 13-9) 001 000 000—1 5 1

2B: H—Mager 2, Mann 2, Wallace. SB: H—Mager, Hale. CS: H—Mager. P—Balkan. Pitchers: H—Sheffield W, 3-1 (5.0 IP, 0 ER, 3 K), Ronz (2.1 IP, 0 ER, 5 K), Wahlberg S, 8 (1.2 IP, 0 ER, 2 K). P—Quillian L, 3-5 (5.0 IP, 2 ER, 3 K), Pauly (4.0 IP, 0 ER, 4 K). Attendance: 759