KANSAS CITY -- The Rangers have pulled rookie left-hander Yohander Mendez from Wednesday's start against the Royals and optioned him to Triple-A Round Rock after it was determined he violated team rules.
Austin Bibens-Dirkx has been recalled from Round Rock and will start on Wednesday.
The Rangers did not specify what Mendez did to warrant being disciplined, but it took place Monday night after their 6-3 victory over the Royals and did not happen at Kauffman Stadium. General manager Jon Daniels said Mendez's actions were not serious enough to involve either the police or Major League Baseball but could be addressed internally.