Boston Red Sox

Martin signed after being selected by the Red Sox in the ninth round of the 2013 MLB Draft out of Texas A&M University.^[1] He previously had been selected by the Chicago White Sox (2012) and Washington Nationals (2009) but chose not to sign. Martin was scouted with a three-pitch repertoire that included a 92–94 mph fastball with above-average control, complemented with an 83-86 mph slider, and a 79–82 mph circle changeup that he has the confidence to throw in any count.^[1]

In a span of two seasons (2013 and 2014) with three teams, Martin was the first pitcher in the Red Sox 2013 draft class to reach the Double-A level.^[2] In his three stints, he posted a collective 8–7 record with a 3.16 ERA and 13 saves in 54 relief appearances, striking out 112 batters while walking 26 in 116+2⁄3 innings of work before joining the Portland Sea Dogs.^[3] Martin suffered setbacks and struggled through injuries in the 2015 midseason, spending two months on the disabled list.^[2] He recovered late in the year and was assigned to the Arizona Fall League, where his fastball touched 96 miles per hour (154 km/h), with some arm-side run, and garnered a promotion to Triple-A Pawtucket Red Sox in 2016.^[2]

In 2016, Martin posted a 3–4 record with a 3.38 ERA and six saves while striking out 78 hitters and walking 21, to compile a 3.71 SO/W in 66+2⁄3 innings. He also recorded a WHIP of 1.19 and was second among International League relievers with 10.53 strikeouts per nine innings.^[4] After the 2016 season, Martin was rated as the Red Sox's No. 22 prospect, according to MLB.com, and the Red Sox added him to their 40-man roster.^[5] Martin made his Major League debut on July 20, 2017.^[6] He was designated for assignment on September 5, 2017, removing him from the 40-man roster. Martin was released on July 25, 2018, to pursue an opportunity to play in Japan.^[7]

Saitama Seibu Lions

On July 26, 2018, it was announced that Martin had signed with the Saitama Seibu Lions of the Nippon Professional Baseball (NPB).^[8]

On October 30, 2019, Martin was claimed waiver from Lions.^[9] On November 5, 2019, he became a free agent.^[10]

Sugar Land Skeeters

On March 5, 2020, Martin signed with the Sugar Land Skeeters of the Atlantic League of Professional Baseball. He became a free agent after the season.