The Mariners placed Kowar on the 60-day injured list Sunday after he was diagnosed with a torn UCL in his right elbow. He'll undergo Tommy John surgery next Friday in Dallas, Daniel Kramer of MLB.com reports.
Kowar will meet with a doctor Friday to have his sore right arm examined, Ryan Divish of The Seattle Times reports.
Kowar's next Cactus League appearance will be pushed back a few days as he deals with soreness, Ryan Divish of The Seattle Times reports.
Kansas City recalled Kowar from Triple-A Omaha on Thursday.
Kansas City optioned Kowar to Triple-A Omaha on Wednesday.
Kowar was optioned to Triple-A Omaha on Saturday.
Kansas City recalled Kowar from Triple-A Omaha on Friday.
Kowar was optioned to Triple-A Omaha on Saturday.
The Royals recalled Kowar from Triple-A Omaha on Tuesday.
The Royals optioned Kowar to Triple-A Omaha on Wednesday.