Giants' Whisenhunt Likely Out for Season with UCL Tear
San Francisco Giants pitcher Carson Whisenhunt has a torn ulnar collateral ligament in his left elbow, and surgery has been recommended. If he undergoes Tommy John surgery, he could miss at least a year and possibly 18 months. The injury derails his bid to earn a starting rotation spot for 2027 and adds to the Giants' pitching injury woes.
Whisenhunt, a second-round pick in the 2022 draft, had been shuttling between Triple-A Sacramento and the majors since mid-June before earning a more permanent role in late July. Across four August starts, he posted a 6.49 ERA with 10 strikeouts and nine walks over 15.2 innings, with his final outing lasting just 2.2 innings before elbow discomfort forced him out. An MRI confirmed the UCL tear.
The injury compounds an already difficult year for San Francisco's pitching depth. Hayden Birdsong and Trevor McDonald also suffered significant elbow injuries earlier in the season, meaning three young arms the organization viewed as future rotation pieces may not be at full strength until 2028. President of baseball operations Buster Posey now faces the prospect of pursuing free-agent starters this offseason to support Logan Webb.
This injury could ripple beyond the Giants' roster, affecting fan expectations and the team's competitive trajectory heading into 2027. With multiple young pitchers sidelined, the organization may lean more heavily on veteran acquisitions, potentially shifting payroll priorities and development timelines. For Whisenhunt personally, a year or more of rehabilitation could stall his career momentum and delay his chance to establish himself as a reliable major-league starter.