The Athletics believe their farm system is the strongest it has been in decades, and that certainly showed through in their representation on Friday when MLB Pipeline released its Top 100 Prospects list.
Three A’s prospects rank among the Top 100. Teenage phenom shortstop Leo De Vries headlines the group at No. 4. Also on the list are left-handers Jamie Arnold (No. 41) and Gage Jump (No. 57).
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The A’s are one of 15 clubs with at least three prospects in the new Top 100. The Mariners lead baseball with seven players on the list.
De Vries moved down a spot from No. 3 in the previous rankings. The 19-year-old switch-hitter -- acquired in a blockbuster deal that sent Mason Miller to the Padres at the 2025 Trade Deadline -- moved up from High-A Lansing to Double-A Midland on Aug. 18 after just 15 games with his new organization. From there, De Vries helped Midland to the Texas League Championship Series, batting .281 with a .910 OPS in 21 games for the Rockhounds.
With De Vries still expected to fill out more of his 6-foot-1 frame as he gets older, it remains unclear if he will remain at shortstop for the long term or switch to a different position. Whatever spot he’s at, the A’s fully expect him to emerge as an impact player at the highest level, and his arrival to the big leagues could come even sooner than expected, given how fast he moved in the system last year.
Arnold, who turns 22 in March, has yet to make his pro debut, but there is a definite buzz surrounding him after his selection by the A’s as the 11th overall pick in the 2025 MLB Draft. The 6-foot-1, 192-pound lefty posted a 2.98 ERA for the second consecutive season at Florida State in ‘25 and struck out 119 batters over 84 2/3 innings. He also recorded a 1.06 WHIP and posted a strikeout-to-walk ratio of better than 5-to-1 over the past two seasons for an impressive two-year run that made him a Golden Spikes Award semifinalist in 2024 and '25.
Arnold has drawn comparisons to two-time Cy Young Award-winner Chris Sale, and there is a belief that Arnold could quickly rise through the system in a similar vein to 2025 AL Rookie of the Year Nick Kurtz if he performs in the Minors like the A’s expect him to.
Jump, 22, ranks as the ninth-best left-handed prospect in baseball. He started out the 2025 campaign at High-A Lansing, where he posted a 2.32 ERA in six games (five starts) with 45 strikeouts and five walks across 31 innings. Jump then earned a promotion to Double-A Midland, where he got off to a strong start before fading a bit near the end as he racked up the most innings he’s ever pitched in a season, posting a 3.64 ERA in 20 games (19 starts) with 86 strikeouts across 81 2/3 innings for a Rockhounds squad that reached the Texas League championship.
In all, Jump went 9-7 with a combined 3.28 ERA in 26 games (24 starts) with 131 strikeouts and 34 walks over 112 2/3 innings in his first professional season, setting himself up for a potential callup to the Majors as early as this season.