Athletics Top 36 Prospects: Leo De Vries Leads the Way
Leo De Vries is 19 years old, from the Dominican Republic, and he’s already playing Double-A ball. That’s the lead. The Athletics’ farm system has a clear headliner, and De Vries earns that spot with a 60 grade on the FanGraphs’ FV scale, which designates a true above-average regular with legitimate impact upside. He signed out of the Dominican Republic during the 2024 international period, and he’s risen fast enough that evaluators aren’t hedging on the grade.
Sixty is rare. Most top-tier systems don’t have one.
Oakland’s depth behind De Vries is anchored by pitching. Gage Jump, a left-hander who’s 22 years old and already at Triple-A, checks in at No. 2 with a 50 FV. He’s got a 2026 ETA, which means he could be pushing for a rotation job this season. Kade Morris is in the same position, literally and figuratively: Triple-A, 45 FV, 2026 timeline. Both guys could make the Athletics’ rotation before the year’s out, and that matters for a franchise still working through its stadium and roster rebuild while operating out of Sacramento.
“The pitching development side has been a priority for us,” one Athletics official told a reporter covering the system last spring.
Jamie Arnold and Wei-En Lin round out the top five starters on this list. Arnold is 22 and sitting at Double-A with a 45 FV and a 2027 ETA, which is a reasonable ceiling for a mid-rotation arm. Lin is 20, also at Double-A, and his projection runs all the way to 2028, reflecting how much runway he still needs. A 45 FV at age 20 isn’t something you dismiss, though.
Position player depth is thinner. Junior Perez, a 24-year-old center fielder already at Triple-A, grades at 45 FV with a 2026 ETA at No. 8. He’s probably Oakland’s most MLB-ready everyday outfield option from the system right now. Henry Bolte, also a center fielder, carries a 40-plus grade but won’t arrive until 2027. Devin Taylor in left field sits at the same grade with a 2028 projection.
Then there’s Johenssy Colome. Seventeen years old, a third baseman at the rookie level, 45 FV, and a 2032 ETA. Six years away. That’s a long time to trust a grade, but the fact that evaluators put 45 on a teenager at that level says something about his raw tools that can’t be manufactured.
The bullpen pipeline isn’t glamorous but it’s functional. Braden Nett carries a 45 FV as a multi-inning arm with a 2026 ETA. Mason Barnett already has big-league exposure and grades at 40 FV. Eduarniel Nunez and Yunior Tur are both active at the MLB level on this list, each graded at 40 FV as single-inning options.
FanGraphs built this ranking from industry sources and in-person looks. The full Board allows cross-system comparisons if you want to see how Oakland stacks up against the rest of the league. The Athletics’ player development infrastructure will determine how many of these grades actually hold up over time, and the Rule 5 draft remains a factor for any prospect who doesn’t get added to the 40-man roster on schedule.
One elite prospect. A cluster of near-ready arms. Teenagers years from contributing. That’s the system right now.