Waldrep will undergo Tommy John surgery on his right elbow, Mark Bowman of MLB.com reports.
Waldrep had surgery in February to remove loose bodies from his elbow and eventually made it back to the big leagues in July. However, he suffered a setback while at Triple-A Gwinnett and now it's been determined he'll need a more serious elbow operation. Waldrep will not be ready to pitch again until the 2028 season.