2021 stats: 7-5, 2.99 ERA, 78 1⁄3 IP, 112 SO, 19 BB, 1.12 WHIP
A 40th-round pick of the Royals out of high school in 2018, Bush spent his freshman year at Washington State before transferring to Central Arizona JC for his sophomore season and landing at St. Mary’s this year. A big-bodied lefthander at 6-foot-5, 240 pounds, he previously struggled with his weight but emerged this season trimmer and with a better delivery, leading to major improvements in both his stuff and control. He went 7-5, 2.99 with 112 strikeouts and 19 walks in 78.