The A’s are calling up left-hander Gage Jump, reports Jeff Passan of ESPN. The 23-year-old is among the top prospects in the organization. When he first appears in a game, it will be his MLB debut. The team has yet to announce the move.
MLB Pipeline ranks Jump at No. 3 in the Athletics system. FanGraphs‘ Eric Longenhagen has him behind only shortstop Leo De Vries. Jump has a mid-4.00s ERA at Triple-A this season, but he’s delivered a hefty 33.1% strikeout rate. He allowed just two earned runs over 9 2/3 innings in MLB Spring Training this year.
The A’s took Jump with the 73rd overall pick in the 2024 draft out of LSU. He immediately provided workhorse-level production in his first taste of pro ball, tossing 112 2/3 innings in 2025. Jump posted a 3.28 ERA and a sub-3.00 FIP between High-A and Double-A. He didn’t crack MLB Pipeline’s top 100 prospects last year, but sits at No. 41 in this season’s rankings.
Jump has shown a diverse pitch mix with Las Vegas. He’s leaned on the four-seamer more than half the time, but also thrown plenty of sliders (18.3%) and curveballs (13.1%). Jump has also used both a sweeper and a changeup more than 5% of the time. Control has been a bit of an issue, as Jump’s 11.8% walk rate is a significant increase from his 2025 mark.
The workload for Jump had been a bit limited to begin the year. He hadn’t completed five innings with the Aviators through eight appearances. Jump went seven strong innings in his last start, striking out nine without issuing a walk. He could step into a rotation that doesn’t have much stability outside of Luis Severino and Jeffrey Springs. Manager Mark Kotsay mentioned a possible IL stint for Aaron Civale after Monday’s game, which would open up a rotation spot.
Photo courtesy of Rick Scuteri, Imagn Images

Good. It’s about time and there is more A’s talent waiting in the minors…
I’m just gonna leave this right here….
Hopefully,
Gage’s skills can make the jump…. from minor league ball to MLB
It’s a big leap for him
If this guy’s looks match his name he’ll have a post MLB career starring in action movies. My 8 year old self can’t stop telling how cool that name is.
I’m going to put my vintage Evel Knievel bike next to the Gage Jump bobblehead…
He has plenty of good choices for his walk-in music.
I hope he has ‘Jump Around” for his walk out music. There’s a few others songs with the name Jum0 in it like Kriss-Kross “jump”
oh cant you see me standing here i got my back against the record machine…. I aint the worst that you’ve seen. oh cant you see what I mean!!
This should make him JUMPing for joy.
He might as well jump (JUMP!)
Hopefully the A’s Gaged his talent correctly and he can make the Jump to the show easily.
Amazing. The A’s have to call up Jump well before he’s actually ready because Kotsay can’t manage the pitching staff and David Forst can’t get league average talent on the 40 man roster.
More LSU alums are always welcome in the Show. Geaux Tigers!