Chris Carter is not in the Astros lineup. Jon Singleton is starting at first base and batting seventh against the Royals.
It has become a regular occurrence for Carter to sit versus righties. Singleton will have to step it up if wants that to continue. He has a .262 wOBA and -0.22 nERD in 46 plate appearances. Royals starter Jeremy Guthrie is getting clobbered versus lefties to the tune of a .398 wOBA and only strike them out 13.3 percent of the time, which is good news for the strikeout prone Singleton (32.6%).
Source: Baseball Press