McWilliams, 22, enters his first professional season after finishing up his collegiate career at Arkansas State University in 2013. The 5-10 170-pound right-hander from Rolla, MO went a combined 7-7 in his two seasons with the Red Wolves.  He appeared in 55 games, making three starts.

“Seth will come here and compete for a spot on our pitching staff,” Warren stated. “We’re excited to see what he has to offer in spring training.”