Overton was drafted by the Boston Red Sox in the 26th round of the 2010 Major League Baseball draft out of Weatherford High School in Weatherford, Oklahoma. He did not sign with the Red Sox and played college baseball at the University of Oklahoma for the Sooners from 2011 to 2013.\n', '

Overton was then drafted by the Oakland Athletics in the second round of the 2013 Major League Baseball draft. After signing, Overton underwent Tommy John surgery, a development which significantly lowered his signing bonus. He returned in 2014 and made his professional debut with the Arizona League Athletics. He was later promoted to the Vermont Lake Monsters, where he finished the season. Unfortunately, the surgery did affect his fastball velocity, which dropped from mid-90\'s to high-80\'s. Overton split the 2015 season with the Class A-Advanced Stockton Ports and the Double-A Midland RockHounds. He began the 2016 season with an 8–4 record and 3.01 earned run average with the Triple-A Nashville Sounds, before being promoted to the Athletics to make his major league debut on June 25, becoming the 11th Athletic to make a start during 2016. Overton made 5 starts with Oakland in 2016, going 1-3 with an 11.47 ERA, giving up 12 HR in 24.1 innings pitched. Following the signing of infielder Adam Rosales, Overton was designated for assignment on January 25, 2017.\n', '

On January 26, 2017, Overton was traded to the Seattle Mariners in exchange for minor-leaguer Jason Goldstein, adding to Seattle\'s starting pitching depth. Overton pitched to a 6.31 ERA for Seattle and was designated for assignment.\n', '

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