Alonso underwent an MRI earlier Friday that revealed the bruise. He jammed his shoulder during Thursday’s game against the Arizona Diamondbacks while diving for a ground ball hit by Arizona third baseman Yasmany Tomas in the bottom of the eighth inning. He left the game and was replaced in the lineup by Will Middlebrooks.
"It's not dislocated, though," assistant general manager Fred Uhlman Jr. said to MLB.com. "That's the good thing.”
Outfielder Abraham Almonte was recalled Friday to take Alonso's place on the roster.
Alonso is leading the team in batting average at .333 and has hit one home run and driven in 10 runs in 26 games this season for San Diego (15-15).
The Padres are in second place in the National League West, four games behind the Los Angeles Dodgers.
- Scooby Axson