Cubs manager Craig Counsell said Wednesday that Alzolay will undergo Tommy John surgery on his injured right elbow, Tony Andracki of Marquee Sports Network reports.
Prior reports had suggested that Alzolay would need some type of procedure on his pitching arm, and Counsell revealed that the right-hander would need a full UCL reconstruction. While no timetable for Alzolay's return has been established, there's a good chance he won't be ready to pitch in the majors again until 2026.