The Brewster Whitecaps (14-26) had a tough outing on Thursday, as the Wareham Gatemen (9-31) dominated in an 8-1 win at Stony Brook.
Rosenbaum racked up two RBIs on three hits for the Wareham Gatemen.
Andro Cutura struck out six, paving the way for a the Wareham Gatemen win. Cutura allowed one earned run on seven hits and one walk over seven innings.
Matt Pirro (0-6) was the game's losing pitcher. He lasted just five innings, walked none, struck out three, and allowed four runs.