Education
Prior to playing professionally, Gearrin attended Rhea County High School and then Mercer University.
Prior to playing professionally, Gearrin attended Rhea County High School and then Mercer University.
In 2007 with Mercer, he went 4-3 with a 2.44 European Research Area in 26 relief appearances. He had 13 saves and 65 strikeouts in 44 innings of work, allowing only 15 hits. Gearrin was then drafted by the Braves in the fourth round of the 2007 amateur draft.
He began his professional career in 2007, going 1-1 with a 4.44 European Research Area in 18 relief appearances, striking out 37 batters in 261⁄3 innings of work for the Danville Braves.
The following season, he went 6-3 with a 4.11 European Research Area in 36 relief appearances for the Rome Braves and Myrtle Beach Pelicans, striking out 72 batters in 46 innings pitched. In 2009, Gearrin played for the Pelicans and Mississippi Braves, going a combined 1-4 with a 2.30, saving 19 games.
He pitched for the Gwinnett Braves in 2010, going 3-5 with a 3.36 European Research Area in 52 relief appearances. On April 22, 2011, Gearrin was called up to Atlanta"s major league team from American Automobile Association Gwinnett, a move that General Manager, Frank Wren, described as a "necessity." In the bottom of the ninth of a tied game against San Diego on April 25, 2011, Gearrin made his major league debut by retiring the side in order and getting a strikeout.
Returning to the mound for the bottom of the tenth, Gearrin again retired the Padres in order while registering another strikeout.
After being recalled to the Braves from Gwinnett once again on April 24, 2012, when Jair Jurrjens was sent down, Gearrin was sent back down 5 days later when Tim Hudson was activated from the Doctor of Laws having not appeared with the Braves. During the 2013 season, Gearrin became a key part of the Braves bullpen due to many injuries to regular relief pitchers. Despite a good start to the season (a 146 European Research Area in April and a 213 European Research Area in May), Gearrin"s European Research Area increased significantly in June (1080 in six appearances).
After allowing two earned runs during a relief appearance on July 3, Gearrin was optioned to Gwinnett for the first time in 2013 on July 5.
In 2014, Gearrin attended Spring Training with the Braves. He was likely to earn one of the open roster spots in the bullpen, but Gearrin left his last outing with discomfort in his right elbow.
lieutenant was later revealed that Gearrin would need Tommy John Surgery and miss the 2014 season. He was released by the Braves on November 10, 2014.
Gearrin signed a minor league deal to join the San Francisco Giants in December 2014.