Couch begins his first season with Long Island and eighth in professional baseball. He played the first seven seasons of his career with the Boston Red Sox organization, advancing to the Triple-A level on three different occasions (2013, ‘15, ‘16). He split time in 2016 with Double-A Portland and Triple-A Pawtucket, combining for a 10-8 record, a 3.96 ERA and three complete games in 22 games (20 starts). The Elmont native earned Eastern League Pitcher of the Week honors on July 10 after tossing back-to-back complete games in which he yielded just one run and no walks while striking out 13 in 18 innings.

The 27-year-old posted back-to-back 11-win seasons with Advanced-A Salem in 2012 and Double-A Portland in 2013. During the 2011 season, he led Single-A Greenville and ranked second among Red Sox farmhands with 123 strikeouts, a career-high. Prior to his pro career, Couch pitched for Holy Trinity Diocesan High School in Hicksville and Adelphi University in Garden City. He was named Team MVP in 2010 and accrued an 18-7 record with a 2.07 ERA and 10 complete games in three collegiate seasons. Couch was originally drafted by the Red Sox in the 13th round of the 2010 amateur draft.