Gillen is hitting .333 with four home runs, three steals and a 22.6 percent strikeout rate in eight games for High-A Bowling Green.
Gillen had an excellent first full season last year (151 wRC+ in 73 games at Single-A), save for the fact he didn't hit for much over-the-fence power (five home runs, .119 ISO). Less than 10 games into his first season at High-A and he's already one homer shy of tying his career high. Gillen leads the Sally league in ISO (.556) and wRC+ (251), but the Rays will likely keep him there for at least another couple months before challenging the 20-year-old center fielder with a bump to Double-A.
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Rays' Theo Gillen: Shut down at Single-A
Rotowire
Single-A Charleston placed Gillen on the 7-day injured list Aug. 16 due to an unspecified injury.
A 19-year-old outfielder, Gillen has submitted an impressive debut campaign in full-season ball, slashing .267/.433/.387 with 36 stolen bases in 39 attempts and a 20.8 percent walk rate. The Rays haven't indicated whether Gillen has any chance of playing again in 2025, but he's likely done enough during his time at Charleston to earn a bump up to High-A Bowling Green next season.
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Rays' Theo Gillen: Out with calf injury
Rotowire
Gillen is dealing with a calf injury and could join Single-A Charleston in three weeks, Sam Dykstra of MLB Pipeline reports.
Gillen's first spring in pro ball was significantly limited by this calf injury, and he had shoulder surgery and dealt with knee and wrist injuries while in high school, so he's developing a track record of missing time. When healthy, he showed he was one of the best pure hitters from the prep ranks in the 2024 draft class. After selecting Gillen with the No. 18 overall pick, the Rays moved him from the infield to center field due to his fringe-average arm.
