Saburo Omura hit a go-ahead solo homer in the fifth inning and Hiroyuki Kobayashi pitched 7 2/3 solid innings, leading the Chiba Lotte Marines to a 3-1 win over the Pacific League-leading Seibu Lions on Wednesday.

News photoLee Seung Yeop of the Yomiuri Giants belts a two-run homer during the sixth inning of Wednesday's game against the Hanshin Tigers at Tokyo Dome. KYODO PHOTO

Omura drove the first pitch from Daisuke Matsuzaka (11-4) into the left-field seats an inning after Tomoya Satozaki tied the game 1-1 with a solo shot for Lotte at Chiba Marine Stadium.

An RBI single by Kazuhiro Wada put Seibu on the board in the first inning, but Matsuzaka got no other run support and lost in a complete-game effort. The right-hander allowed six hits, struck out eight and walked two.