Petersen was drafted by the Florida Marlins in the seventh round of the 2007 Major League Baseball draft out of the University of California, Irvine.[3]
Petersen was called up to the majors for the first time on May 6, 2010.[4] He hit a single in his first career at bat and eventually scored a run.[5]
On July 20, 2011, Peterson pitched a hitless inning of relief, walking one batter, in a game against the San Diego Padres. On September 27, when Javier Vázquez made his last Major League start, Petersen gave him a win when he hit a ninth inning walk-off home run off Nationals reliever Doug Slaten off the Bud Light advertisement in right field.[6][7] It ended up being the final home run hit by a Marlins’ player in the organization’s first home, then known as Sun Life Stadium.[8]
On April 29, 2012, Petersen was recalled from Triple-A New Orleans to replace struggling outfielder Chris Coghlan, who was optioned to New Orleans. Petersen was hitting .320 with 8 runs batted in and 3 SB in 21 games at New Orleans. He finished the season batting .195 in 241 at-bats with no homers, 9 doubles, 3 triples, 17 runs batted in, 25 walks, and 8 stolen bases.
After the signing of reliever Jon Rauch to a one-year deal, Petersen was designated for assignment by the team. He cleared waivers and was sent outright to Triple-A New Orleans on February 8, 2013. [9] In 2013, he hit .275, with 33 doubles, 5 triples, 8 home runs, and 49 runs batted in while stealing 12 bases with the Zephyrs.[10]
Petersen signed a minor league contract with the Texas Rangers on December 5, 2013. He was assigned to the Rangers' Triple-A affiliate, the Round Rock Express. On 3 April 2014, Petersen hit a grand slam in a 7-6 loss to the Oklahoma City RedHawks. So far, in the 2014 season, he has hit .254, with 12 homers, 57 runs batted in, and 5 stolen bases to go with a .323 on base percentage.[11]
On December 16, 2014, Petersen signed a minor league contract with the Milwaukee Brewers. He made 47 appearances for the Triple-A Colorado Springs Sky Sox in 2015, batting .218/.260/.294 with one home run and 13 RBI. Petersen was released by the Brewers organization on August 1, 2015.
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