The Giants transferred Whisenhunt (elbow) from the 15-day injured list to the 60-day IL on Wednesday.
His move to the 60-day injured list frees up a spot on the 40-man roster for right-hander Braxton Roxby, who was called up from Triple-A Sacramento to provide a fresh arm for the Giants' injury-depleted pitching staff. Whisenhunt is set to miss the rest of the season after recently sustaining a torn UCL in his left elbow, but a decision has yet to be made on what type of surgery he'll require to address the injury, per Susan Slusser of the San Francisco Chronicle. Whisenhunt will receive a second opinion before going under the knife, but regardless of whether he requires a traditional Tommy John surgery, an internal brace procedure or a hybrid of the two, he'll likely miss the entire 2027 season.