A's Top Prospect Suddenly Faces A Big Development Concern

Leo De Vries, the Oakland Athletics promising infielder and No. 2 overall prospect, faces a potential season-ending injury that disrupts a year marked by career-best performances.

The Athletics may have to wait until next year to see Leo De Vries back in game action.

De Vries, the club’s No. 1 prospect and MLB Pipeline’s No. 2 overall prospect for 2026, landed on the Double-A injured list last week and is now dealing with a sore right shoulder. According to MLB.com’s Martín Gallegos, he has been sidelined from throwing for four weeks. With the Midland RockHounds’ regular season ending on Sept. 13, that likely closes the book on his 2026 minor league season.

There is still a small chance De Vries could return in the Arizona Fall League if he is healthy enough by then, Gallegos reported.

The 19-year-old switch-hitter came into the A’s system as one of the headliners in the blockbuster trade that sent All-Star closer Mason Miller to San Diego at last year’s deadline. The Padres originally signed De Vries out of the Dominican Republic in January 2024.

Even with the injury cutting things short, De Vries put together a strong year at the plate in his first full season in the organization. In 93 Double-A games for Midland, he hit .290 with a .378 on-base percentage and an .836 OPS, while adding 13 home runs, 55 RBIs and 34 stolen bases. Those numbers gave him new career highs in steals, batting average, on-base percentage and OPS.

His 2025 season was also productive: he batted .255 with 15 homers and 74 RBIs in 118 games across two minor league levels and two organizations.

Defensively, De Vries has spent most of his minor league time at shortstop, but he also logged 15 games at third base this season. That added experience at the hot corner could give the A’s another path to getting his bat into the lineup sooner, especially after the club signed shortstop Jacob Wilson to a seven-year extension earlier this year.

For now, though, the focus is on getting De Vries healthy. If his regular season is indeed over, the wait to see him again will stretch into 2027.

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