Jefferies could be needed in the Giants' rotation sooner rather than later if Keaton Winn (elbow) is sidelined, Susan Slusser of the San Francisco Chronicle reports.
A non-roster invitee, Jefferies threw to hitters Tuesday for the first time since May of 2022 following a long rehab after his second Tommy John surgery. Given the length of time that he's missed, the expectation is that Jefferies will head to Triple-A Sacramento to begin the season. However, if he gets off to a nice start with Sacramento he could be needed on the big club in short order, particularly if Winn's elbow injury lingers. Jefferies posted a 5.75 ERA and 37:14 K:BB over 56.1 innings for the Athletics from 2020-22.