Keynan Middleton was one of the more experienced players signed to a minor-league contract last winter. Over five seasons, he had appeared in 136 games for the Angels and Mariners, with a decent 3.84 ERA (ERA+ 112). He had Tommy John surgery in May 2018, and his numbers took a notable dip after his return from that in late 2019. He made the news in July 2020 for kneeling during the National Anthem, and spent last season in Seattle. Middleton had a 4.94 ERA over 32 games and 31 IP, with a K:BB ratio of 24:19, though his FIP was close to half a run better, at 4.