Nick Groke of The Athletic reports that Colton Welker will undergo left shoulder surgery next week.
Welker is dealing with an impingement in the labrum. The operation is expected to end his season, although the Rockies are hopeful that Welker will be able to play in the Arizona Fall League. Welker also missed about half of the 2021 season while serving an 80-game PED suspension, and, of course, had his 2020 campaign wiped out by the pandemic.