Yankees 1B Anthony Rizzo (arm) undergoing tests after collision

(Photo credit: Eric Canha-USA TODAY Sports)
New York Yankees first baseman Anthony Rizzo is undergoing further testing on Monday after a collision during Sunday night's game against the Boston Red Sox.

Rizzo immediately left the game with a right lower arm injury after colliding with Red Sox pitcher Brennan Bernardino at first base and landing awkwardly on his right hand in the seventh inning.

A fluoroscopy after the ga