PHOENIX (AP) — Yoshinobu Yamamoto threw six scoreless innings, rookie Andy Pages hit a two-run homer as part of a five-run second inning, and the Los Angeles Dodgers beat the Arizona Diamondbacks 8-0 on Wednesday night.

Yamamoto (3-1) continues to pitch well in his first big-league season after signing a $325 million, 12-year deal during the offseason. The Japanese star was roughed up in his first outing on March 21 in South Korea, but has been much better over his past six starts and now has a 2.91 ERA.

The righty gave up five hits and two walks, striking out five.

“I think I’m able to keep myself very calm and that’s one of the biggest reason I’m able to execute my pitches,” Yamamoto said through a translator.

Pages worked a full count against Arizona’s Jordan Montgomery before hammering his 429-foot homer to deep left-center for a 2-0 lead in the second. He’s on an eight-game hitting streak and has 10 RBIs in 14 games.