Saitama vs Orix Prediction 29 September 2026
📡 Seibu wrapped up Monday with a 2-4 loss to Rakuten but remain second in the Pacific League standings. Orix sit fourth, having fallen well behind the top three. The starting pitching matchup looks heavily one-sided: the hosts send out Kaimu Taira, the league leader in ERA, while Orix turn to Kaissei Tomatsu, who has made just one start this season and continues to struggle with command.
Seibu have won seven of their last ten games, and the autumn stretch of the series has seen a notable uptick in scoring.
📊 Seibu have claimed victory in seven of the last 10 head-to-head meetings, outscoring their opponents 46-25 over that span. The average total runs in these games stands at 7.1, with at least six runs scored in six of those contests. The series has been particularly high-scoring as autumn approaches: among four September clashes, Seibu posted emphatic wins of 8-0 and 8-4, while the most recent matchup ended 5-4.
Head-to-head statistics Saitama - Orix

The Lions land the league’s top pitcher and get a favorable matchup for their offense.
The hosts’ main strength remains on the mound: their team ERA of 2.92 ranks second in the Pacific League, and 18 shutout victories speak volumes about their pitching depth-arguably more so than their offensive standings. Offensively, they’re far more modest, with 489 runs, 106 home runs, and a .366 slugging percentage. However, Seibu’s last six games have produced totals of 11, 13, 8, 9, 5, and 6 runs: even without a particularly explosive lineup, their late-September contests have consistently turned into high-scoring affairs.
Match Results: Saitama Seibu Lions

Tomatsu’s struggles with command further expose Orix’s pitching weakness
Orix have scored 482 runs with a .243 team batting average, placing their offense in the lower-middle tier of the league. Their main concern right now is pitching: the team ERA has climbed to 3.95, the worst mark in the Pacific League, with 597 runs allowed. The bullpen has tallied 111 holds, but the starting rotation often fails to hand them a favorable scoreline. This is especially risky against Seibu-Orix have conceded at least four runs in three of their four head-to-head matchups in September.
Match Results: Orix Buffaloes
⚾ Starting Pitchers
Kaima Taira, a right-hander, leads all qualified pitchers in the league with a stellar 1.36 ERA. Over 22 appearances, including 21 starts, he’s posted an 11-5 record across 139 innings, allowing just 91 hits, striking out 134, surrendering 24 earned runs, and recording a WHIP of 0.97. Taira has delivered 16 quality starts, one complete game, and one shutout. Opposing batters are hitting just .186 against him, so Orix’s chances of generating early offense appear slim.
Kaisei Tomatsu, a lefty, has made six appearances and just one start: he’s 1-0 with a 7.00 ERA over nine innings, giving up seven hits and seven earned runs while striking out 10. His WHIP sits at 2.00. Tomatsu has yet to throw a complete game or a shutout. The biggest concern is his control-he’s issued 11 walks in just nine innings, meaning that even with a modest hit total, he’s providing opponents with far too many free baserunners.
⭐ Editorial Prediction
Taira is more than capable of single-handedly limiting Orix’s offense, but this line doesn’t require both sides to contribute evenly. Seibu have a highly favorable matchup against Tomatsu, whose 7.00 ERA, 2.00 WHIP, and 11 walks per nine innings present a real opportunity to pile up runs early. Six of the last ten head-to-head meetings have already seen at least six runs scored, and Seibu’s last five out of six games have also surpassed this mark. If the hosts can capitalize on their chances against Tomatsu, Orix would only need to add one or two runs off Taira or the late relievers to push the total over. We’re backing the over 5.5 runs.