Jimenez's contract was selected by the Athletics on Thursday, Matt Kawahara of the San Francisco Chronicle reports.
After spending all of 2021 at Triple-A Buffalo, Jimenez will be available to make his first major-league appearance since logging two relief outings with the Giants in 2020. As a non-roster invitee this spring, he posted a 1.50 ERA, 1.17 WHIP and 7:4 K:BB across six innings.