The Royals' game notes on Monday showed Rangers left-hander Yohander Mendez scheduled to start Wednesday's game at Kauffman Stadium.
However, Mendez was scratched from the start and demoted to Class AAA Round Rock on Tuesday after violating team rules, according to the Fort Worth Star-Telegram's Stefan Stevenson.
The Star-Telegram reported that Mendez and second baseman Rougned Odor "were out late with some Royals players at a Kansas City establishment after Monday's game, according to several sources. Apparently, the night on the town got out of hand for Mendez, which prompted the move."
That story also says that Odor was scratched from Tuesday's lineup, but manager Jeff Banister declined to say if that was because of the night out.