The Athletics acquired right-hander A.J. Causey from the Kansas City Royals for right-hander Mitch Spence on Thursday.
Causey was in camp for the Royals as a non-roster invite.
The A’s will move to Las Vegas prior to the 2028 season, when their new ballpark is completed on the Strip.
The Athletics picked Spence first overall in the Rule 5 draft before the 2024 season, and he’s pitched the past two years with them. He went 3-6 with a 5.10 ERA in 32 appearances — including eight starts — in 2025.
Spence was designated for assignment by the A’s on Tuesday.
Kansas City put right-hander Alec Marsh on the 60-day injured list to make room for Spence on the 40-man roster.