With two outs, McNamara walked, Pakalnis loaded the bases on an infield hit, and Vollone drew a walk to force in another run.
Harvard led, 6-3.
The Eagles rallied back in the seventh, when Joe Giaquinto drew a leadoff walk and Peter Flyan launched a 380-foot homer to right field. Rick Murphy followed with a walk, and George Sorbara relieved Jim Chenevey on the mound. Daley walked, Larry Hill advanced the runners, and Jay Adams doubled down the line in right to give B.C. the lead.
John Schwegman's two-out single scored Adams to make it 8-6.
In the eigth, a Pakalnis walk, a Vallone single, a Tony DiCesare bunt and a McAndrews sacrifice fly narrowed the margin to one, setting the stage for Vallone's and Vierra's ninth-inning heroics.
THE NOTEBOOK: Mike Pakalnis played in place of the injured Bob Kay at second. Nahigian batted McAndrews second, with Rivera fifth and Maspons fourth...McNamara is now hitting .423, Vallone .367, Vierra .355 and Maspons .349...Reserve left fielder Frank Caprio is Harvard's leading hitter in GBL action (six for 11) ... Yesterday marked Harvard's 3000th game. There were two outs when the winning run scored. Game--Winning RBI--Vallone. DP--Boston College. E--Murphy, Schwegman, O'Nell, Pakalnis 2, Dicesare. LOB--Boston College 9, Harvard 10. 2B--Murphy, Adarns, Vierra, Vallone. HR--Flynn, Daley, McAndrews (2). SB--DePalo. CS--Giaquinto, DePalo S--Hill, Dicesare SF--R'vera, McAndrews. Chenevey faced three batters in seventh. HBP--DePalo by O'Nell. T--3:06. A--59.