Acquired by the Mets along with Gerson Bautista and Stephen Nogosek in the Addison Reed trade, right-hander Jamie Callahan was unimpressive in his first few years in the Boston Red Sox minor league system. After he was transitioned into a reliever full-time in 2016, his career turned around, as he was able to maximize his strengths and hide his weaknesses.
In 2017, he was even better, spending time pitching with the Double-A Portland Sea Dogs, the Triple-A Pawtucket Red Sox, and the Triple-A Las Vegas 51s. The right-hander posted a 2.