The Oakland Athletics are set to call up their highly-rated pitching prospect Gage Jump from the minor leagues following an injury to starter Aaron Civale, multiple sources reported Tuesday.
Jump, a 23-year-old left-handed pitcher known for his strikeout ability, has recorded 56 strikeouts across 38 innings in nine Triple-A Las Vegas appearances this season. The southpaw has issued 20 walks while compiling a 4.50 ERA and an 0-2 win-loss record.
Selected in the second round of the 2024 draft from LSU, Jump currently ranks as the 41st best prospect in all of baseball according to MLB Pipeline. Among Athletics prospects, he sits third behind shortstop Leo De Vries and left-hander Jamie Arnold. Arnold, chosen 11th overall in the 2025 draft from Florida State, is presently playing at Double-A Midland.
Civale was removed from Monday’s game after just four innings due to concerning velocity decline that manager Mark Kotsay attributed to a potential right shoulder or lat muscle problem following the contest. The team announced Civale would receive medical evaluation Tuesday.
During Monday’s 9-2 defeat to the visiting Seattle Mariners, he surrendered seven runs on nine hits plus one walk while throwing just 73 pitches. In his previous outing against the Los Angeles Angels last week, when he gave up five runs over five innings, Civale acknowledged he had been “working through” the arm problem “for a little bit.”
Monday’s fastball velocity registered 88.3 mph on the stadium radar system, representing a drop of more than 3 mph from his 2026 season average.
The 30-year-old Civale carries a 5-2 record this season with a 4.20 ERA through 11 starts. Before his struggles against the Angels and Mariners in his last two outings, he maintained a 2.70 ERA. Those two difficult performances resulted in 14 hits allowed (including six home runs) and 12 earned runs.
