Tomoya Satozaki broke open a one-run game with a fifth-inning grand slam as the Chiba Lotte Marines routed the Saitama Seibu Lions 11-3 Saturday to snap a four-game losing streak.

Satozaki sent a 1-1 pitch from Takayuki Kishi (6-4) into the left-field seats to extend Lotte's lead to 6-1 at Seibu Dome. Kazuya Fukuura drove in three runs with a pair of singles for Bobby Valentine's team.

Shunsuke Watanabe (6-4) allowed three runs and eight hits in six-plus innings.