The University of Hawaii baseball team permitted four runs in the bottom of the ninth inning and lost 6-5 to Pacific on Sunday in Stockton, Calif.
The Rainbows (11-30, 5-13 Big West) were bidding for their first series sweep of the season.
The Tigers (11-31, 4-14) scored all their runs in the ninth with two outs. Connor Bitzer had an RBI single, and Dustin Torchio later drove in a run with a ground-rule double before a two-run single by the next batter, Erik Lockwood, ended the game.
Lawrence Chew (2-2) permitted the final two hits.
Bryce Lombardi and Jason Taasaas (2-0) each pitched two scoreless innings of relief.
The Rainbows scored three times in the top of the sixth, on a two-run single by Trevor Podratz and a sacrifice fly by Adam Hurley, to take a 5-1 lead.
Pacific snapped an eight-game losing streak. The Tigers had lost 14 of their previous 15.
Hawaii will play a nonconference road game at Fresno State on Tuesday.