The Brewster Whitecaps of the Cape Cod Baseball League play at the Stony Brook School from mid-June to early August.

* The Brewster Whitecaps of the Cape Cod baseball league has been home to many current and former major league baseball stars, such as Mike Aviles, Sean Casey, Chris Dickerson, Bobby Keilty, Aaron Rowand, Gaby Sanchez, Brian Bannister, Matt Herges, Mike Meyers, Billy Wagner and Hall of Famer Tony Gwynn and his son Tony Gwynn Jr.

In the summers of 1988 and 1989, he pitched for the Brewster Whitecaps of the Cape Cod Baseball League.