The struggling A's received more bad news on Monday.

Outfielder/first baseman Mark Canha has been on the 10-day injured list. The team recalled reliever Ryan Buchter from Triple-A Las Vegas in a corresponding move. 

Canha left Sunday's 5-4 loss to the Blue Jays in the eighth inning. He has been diagnosed with a sprained right wrist after a lingering issue the past few games.