OSAKA (Interstat) — Kohei Arihara pitched six strong innings and the Nippon-Ham Fighters pounded out 15 hits to beat the Orix Buffaloes 13-7 on Sunday. Arihara allowed two earned runs on four hits with one strikeout to improve to 5-6. Tatsuki Mizuno drove in three runs on two hits, Rodolfo Castro homered and drove in two, and Yuma Imagawa added a pinch-hit two-run homer for Nippon-Ham, which improved to 62-49. The Fighters built an early lead with two runs in the second, three in the fourth and one each in the fifth, sixth and seventh before adding four in the eighth. Orix scored two in the fifth and five in the eighth. Ryoto Kita hit two home runs and drove in four for Orix, which fell to 53-54-1. Ryuhei Sotani took the loss, dropping to 4-5. The game, played before 35,317 at Osaka Dome, lasted 3 hours, 57 minutes. Nippon-Ham’s 15 hits were more than enough to offset Orix’s eight.