Larish played on the US team in the 2003 Pan American Games; the team took the silver medal and went 27–2 overall, at the time its best finish ever. Larish scored the only run in the team's 3–1 loss in the final game to Cuba. Larish was chosen by the Detroit Tigers in the fifth round (150th overall) of the 2005 Major League Baseball Draft. Larish attended college at Arizona State University, and on June 21, 2005, Larish became the third College World Series player in history to hit three home runs in a single game.
Larish had previously been drafted by the Los Angeles Dodgers in the 13th round of the 2004 Major League Baseball Draft, but turned down a reported $660,000 contract offer at the advice of his agent, Scott Boras, so that he could complete college.
On January 25, 2010, Larish was optioned to Triple-A Toledo.
On July 25, 2010, Larish was recalled to the Detroit Tigers when Magglio Ordonez and Carlos Guillen were sent to the disabled list. On July 30, Larish was designated for assignment by the Tigers and subsequently claimed off waivers by the Oakland Athletics. He was then assigned to the Sacramento River Cats. On August 6, 2010, Larish had 10 RBIs in a doubleheader sweep at Isotopes Park. The River Cats won both games, 14-5 and 12-3, respectively.
On November 18, 2010, Larish signed a minor league contract with the Philadelphia Phillies.
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