SAN DIEGO — Right-hander
Meanwhile, All-Star Freddie Freeman is back in the Dodgers’ Game 3 lineup, batting third and playing first base, after he left Game 2 with discomfort from a sprained right ankle.
Grove is ineligible to pitch in the NL Championship Series should the Dodgers advance but could return for the World Series.
“Shoulder thing he’s been dealing with for quite some time,” Dodgers manager Dave Roberts said. “Recovery is not good. We understand the cost of the next round, not being available. Michael’s extremely disappointed.”
Grove, 27, was 4-4 with a 5.12 ERA in two starts and 37 relief appearances this season.
Casparius, a 25-year-old rookie right-hander, made his big league debut on Aug. 31 and was 2-0 with a 2.16 ERA in three relief appearances, striking out 12 and walking four in 8⅓ innings.
The Associated Press contributed to this story.