The Tritons have made several appearances in the Division II tournament, mostly under the leadership of former head coach Dan O'Brien.

The Tritons reached the Division II College World Series for the first time in 2009, finishing fourth.

In 2010, the Tritons enjoyed their most successful season to date, compiling a record of 54–8, and reaching the Division II national championship where they eventually fell.

[3] The UC San Diego baseball team plays its home games at Triton Ballpark in La Jolla, which was renovated in 2014.

[6] Triton baseball, like most UCSD athletic programs, transitioned to the NCAA Division I Big West Conference beginning in 2020.