Roberts: Yamamoto might have tipped pitches in Game 1

Los Angeles Dodgers manager Dave Roberts believes tipping pitches might have contributed to Yoshinobu Yamamoto's struggles in Game 1 of the NLDS against the San Diego Padres.

"There are some things that I think we’re going to dig into because I think at second base they had some things with his glove (that were) giving away some pitches," Roberts said, per MLB.com's Brian Murphy. "We're going to clean that up. That's part of baseball. So it's on us to kind of clean that up and not give away what pitch he's going to throw."

Yamamoto struggled in his first postseason start, allowing five runs on five hits across three innings. He struck out one batter and amassed only five swinging strikes.

Yamamoto had issues against the Padres in the regular season, posting a 12.00 ERA in six innings (two starts).