Gilbert, who fired four scoreless innings across two Cactus League appearances before spring training was suspended, is considered a future ace of the Mariners' staff, Jesse Sanchez and Greg Johns of MLB.com report.
The 22-year-old performed like a seasoned veteran over his pair of Cactus League appearances this spring, an extension of the dominant form he displayed at three different stops during his 2019 minor-league debut. Gilbert was already at Double-A Arkansas by the end of last season, with his overall body of work earning him the organization's Minor League Pitcher of the Year award. Johns notes the right-hander's mid-90s fastball is complemented by an effective slider, curve and changeup, and that his 6-foot-6 frame leads to an unusually long stride toward the batter's box that makes his power pitch even more effective.