"He was good," Dodgers manager Don Mattingly said. "He got out there, which is what we wanted, and pitched a nice inning. He made it look pretty easy."
Guerra had been sidelined since June 3 with right knee inflammation and eventually underwent arthroscopic surgery on June 5. Because the injury wasn't related to his throwing arm, Guerra was able to keep himself sharp on the mound while he rehabbed his knee.
"He had a fairly quick recovery," Mattingly said. "I think it made it easy because he really only missed throwing for six or seven days. He was throwing right away, so I thought that helped."
Once the Dodgers' closer earlier in the season, Guerra entered Saturday with a 3.24 ERA and 20 strikeouts in 25 innings.