Royals prospect right-hander Kyle Zimmer will undergo surgery for thoracic outlet syndrome.
Kyle Zimmer (shoulder) is day-to-day in the Royals' minor league system.
Royals pitching prospect Kyle Zimmer (shoulder) has made two appearances for High-A Wilmington.
Royals pitching prospect Kyle Zimmer (arm) will throw one inning in an extended spring training game on Friday.
Kyle Zimmer is hanging back at extended spring training after developing some arm fatigue.
Royals optioned RHPs Kyle Zimmer and Miguel Almonte and OFs Brett Eibner and Jose Martinez to Triple-A Omaha.
Kyle Zimmer allowed one run across three innings in Monday's loss to the Athletics.
Kyle Zimmer delivered two scoreless innings Wednesday in the Royals' Cactus League exhibition against the Rangers.
Royals assistant general manager JJ Picollo said on MLB Network Radio on Wednesday that the club believes prospect right-hander Kyle Zimmer will play a role in their rotation in 2016.
Royals purchased the contract of RHP Kyle Zimmer from Double-A Northwest Arkansas.
Royals prospect RHP Kyle Zimmer has been promoted to Double-A Northwest Arkansas.
Royals prospect RHP Kyle Zimmer struck out three batters over two scoreless innings on Monday for Low-A Lexington.
Royals prospect RHP Kyle Zimmer had another successful outing Thursday, allowing one earned run on four hits in three innings for Low-A Lexington.
Royals pitching prospect Kyle Zimmer (shoulder) will make his season debut at Low-A Lexington on Friday.