Following a scary collision last night that looked potentially serious, Chicago Cubs first baseman Anthony Rizzo is simply day-to-day with a right shoulder bruise, reports Clark Goble of MLB.com:

Cubs first baseman Anthony Rizzo is day to day with a bruised right shoulder after colliding with Astros first baseman Brett Wallace in the third inning in Tuesday's 1-0 loss.

"I think tomorrow, he'll probably wake up pretty darn stiff," [Dale] Sveum said. "I think it'll just be a day-to-day thing."

The collision occurred when Rizzo hit a routine ground ball to second baseman Jimmy Paredes whose high throw sent Wallace into the path of the hustling rookie. The 23-year-old Rizzo took a pretty spectacular fall upon colliding with Wallace, losing his helmet and remaining on the ground in visible pain for several minutes before walking off the field with help from Cubs staff.

Rizzo said the shoulder has some residual soreness but the team believes the injury is not anything serious. The young lefty has played very well since his call-up in late June, hitting .295/.349/.467 with twelve home runs in sixty-eight games.