Chunichi Dragons ace Kazuki Yoshimi remained untouchable this season, throwing seven scoreless innings in a 3-1 win over the Central League-leading Tokyo Yakult Swallows.

Yoshimi (2-0), who has returned from Tommy John surgery, has yet to allow a run in 20 innings this season. The 30-year-old allowed six hits but no walks, while striking out nine.

"It's still early," Yoshimi said of his streak. "I just want to go out each game and forget about what's come before.