Saitama vs Nippon-Ham Fighters Prediction 10 October 2026
📡 Seibu and Nippon-Ham kick off the playoffs after a near-identical regular season: the Lions secured second place with a 79-60-4 record, while the Fighters finished just behind at 78-62-3. Seibu wrapped up their campaign with two convincing wins over Lotte, 7-1 and 3-0. Looking ahead to Game 1 of the series, the starting pitchers present a compelling contrast: Kaito Tayra closed out the year boasting a 1.36 ERA, whereas Kohei Arihara posted a 4.44 ERA.
Eight out of ten games between Seibu and Nippon-Ham have seen at least six runs scored.
📊 Over their last ten games, Seibu have picked up four wins, five losses, and one draw, while Nippon-Ham have been far more productive at the plate, outscoring opponents 48 to 24. Offense has been the story for both teams: eight of those ten matchups have seen at least six runs scored, with an average total of 7.2 runs per game. Scorelines like 11-2, 9-1, 8-2, and 7-1 have all featured recently, so another high-scoring affair between these sides would hardly be a surprise.
Head-to-head statistics Saitama - Nippon-Ham Fighters

The Lions return from the break boasting the league’s top pitching staff and a favorable matchup against Arihara.
The Lions wrapped up the regular season with four wins in their last five games, allowing just eight runs over that stretch. All year long, their success has revolved around pitching: a league-best 2.87 ERA in the Pacific League, 19 shutouts, and 123 holds. Offensively, they’ve been more modest-503 runs scored, 109 home runs, a .244 batting average, and a .364 slugging percentage. However, they did plate 10 runs across their last two outings. Facing Arihara, whose WHIP remains on the higher side, the hosts have a real opportunity to keep their offensive momentum going.
Match Results: Saitama Seibu Lions

The Fighters’ explosive offense makes up for their noticeably less reliable starting pitching.
The Fighters trail Seibu by just one win in the standings, but they clearly outshine their rivals in offensive firepower: 591 runs, 177 home runs, and a .412 slugging percentage compared to the Lions’ 503 runs, 109 homers, and a .364 slugging mark. Nippon-Ham have also taken three of their last four completed games, including convincing wins of 8-3 and 3-1 over Lotte. While their team ERA of 3.38 lags behind Seibu’s, their potent lineup gives the visitors a real shot at putting runs on the board-even against an elite starting pitcher.
Match Results: Hokkaido Nippon-Ham Fighters
⚾ Starting Pitchers
Kaima Taira, a right-hander, has featured in 23 games this season, starting 22 of them. He boasts a 12-5 record with a stellar 1.36 ERA across 146 innings, allowing just 95 hits, striking out 141, surrendering 25 earned runs, and posting a WHIP of 0.96. Taira has delivered 17 quality starts, including one complete game and one shutout. Opposing hitters are batting just .185 against him, so it makes sense to look for offensive production in this matchup not from Nippon-Ham’s early bats, but on the other side of the duel.
Kohei Arihara, also a righty, has made 17 starts with a 7-9 record and a 4.44 ERA over 103.1 innings. He’s allowed 114 hits, struck out 67, conceded 59 earned runs, and holds a WHIP of 1.34. Arihara has produced 10 quality starts, two complete games, and two shutouts. However, opponents are hitting .282 off him, and he wrapped up the season well below his usual standards-making his start the key opportunity for Seibu to put runs on the board early.
⭐ Editor’s Prediction
Taira has the tools to keep Nippon-Ham in check, but the 5.5 total doesn’t demand a full-on slugfest. Seibu face Arihara, who posts a 4.44 ERA, 1.34 WHIP, and has allowed 114 hits over 103.1 innings, while Seibu themselves closed the regular season with ten runs across two games. Still, you can’t count the Fighters out entirely-they boast the Pacific League’s second-best offense with 177 home runs. The last 10 head-to-head meetings offer even more evidence: eight of those games saw at least six runs, despite both clubs featuring strong pitching throughout the season. A 4-2 or 4-3 scenario doesn’t require Taira to collapse; Seibu just need a productive outing against Arihara and the visitors to scratch across a run or two off the starter or bullpen. The smart play is over 5.5 total runs.