Oakland Athletics left fielder Khris Davis had to be removed from the A's game on Monday due to calf tightness.
If Davis is out for more than just a game or two, it could delay the A's sending down Matt Olsen. There should be an update from the club on Tuesday about the severity of the injury.
Davis owns a .346 wOBA with 17 homers and 34 RBI's over 229 plate appearances this season.
Source: Joe Stiglich