"Not too bad," Arias said, describing the extent of his injury. He estimated that he would need a couple of days to recover.
Giants manager Bruce Bochy described Arias' ailment as "mild" and noted that the utility man will be re-evaluated Tuesday.
Arias made his fifth start of the season at shortstop, temporarily giving the Giants another right-handed bat in the lineup against Dodgers left-hander Hyun-Jin Ryu. Brandon Crawford replaced Arias at shortstop.