Takeya Nakamura hit a tiebreaking two-run homer in the seventh inning, leading the Saitama Seibu Lions to a 6-4 victory over the Tohoku Rakuten Golden Eagles on Monday.
Nakamura connected off Shinichiro Koyama (2-5) to break a 4-4 tie four innings after his RBI double pushed Seibu's lead to 4-0 at Seibu Dome.
Hiroyuki Nakajima, Tomoaki Sato and Takumi Kuriyama also had run-scoring doubles for the Pacific League-leading Lions.