Keith Hessler

Keith Alexander Hessler (born March 15, 1989) is an American former professional baseball pitcher. He previously played in Major League Baseball (MLB) for the Arizona Diamondbacks and San Diego Padres.

Arizona Diamondbacks
Hessler played college baseball at Coastal Carolina University. He was drafted by the Arizona Diamondbacks in the 28th round of the 2010 Major League Baseball Draft. Hessler was called up to the majors for the first time on August 8, 2015.

San Diego Padres
Hessler was claimed off waivers by the San Diego Padres on May 10, 2016. After 15 games of relief in 2016, he was designated for assignment on April 1, 2017, and released on August 3, 2017.

Somerset Patriots
On August 11, 2017, Hessler signed with the Somerset Patriots of the Atlantic League of Professional Baseball. In 13 games for the Patriots, Hessler recorded a 4.05 ERA with 13 strikeouts across $13 1⁄3$ innings.

Colorado Rockies
On January 9, 2018, Hessler signed a minor league contract with the Colorado Rockies. He made 42 appearances out of the bullpen for the Triple–A Albuquerque Isotopes, compiling a 5.47 ERA with 57 strikeouts across $52 2⁄3$ innings pitched. Hessler elected free agency following the season on November 2.