The Giants reinstated Warren (elbow) from the 60-day injured list Saturday and optioned him to Triple-A Sacramento, Shayna Rubin of the San Francisco Chronicle reports.
Warren has been on the injured list all season while working his way back from the Tommy John procedure he underwent in May 2023. He has been playing in rehab games at Triple-A since June 18, and he'll essentially continue that rehab with Sacramento after allowing 10 runs (nine earned) in his first 8.1 innings. He will reclaim a spot on the 40-man roster, though he'll likely need to turn in better results in the minors before having a chance to join San Francisco.