Saitama vs Nippon-Ham Fighters Prediction 13 September 2026
📡 Seibu and Nippon-Ham square off for the second straight day at the Belluna Dome after playing to a 3-3 draw on Saturday. The hosts remain second in the Pacific League, while the visitors sit third, trailing by 2.5 games. In this prediction, Seibu’s key advantage lies with starter Natsuki Takeuchi, who has delivered a much more consistent season than Kohei Arihara.
Head-to-Head
📊 Over their last ten head-to-head clashes, the wins have been almost evenly split: Seibu have claimed five victories, while Nippon-Ham have taken four, with one game ending in a draw. The visitors lead in runs scored, 46 to 35, although that margin comes from a few lopsided wins. Seibu have come out on top in three of the last five meetings, while Saturday’s matchup finished in a 3-3 tie.
Head-to-head statistics Saitama - Nippon-Ham Fighters

Saitama Seibu Lions Team Overview
Prior to Saturday’s draw, Seibu had taken three of their previous four meetings, notching wins over Orix by scores of 2-0, 8-0, and 8-4. The team currently sit second in the standings and remain one of the league’s most consistent pitching units. Offensively, Nevin has been a key contributor with 19 home runs, while a deep bullpen provides crucial support in the late innings. This profile serves them well in matchups where the starter can deliver six or seven strong innings with minimal damage.
Match Results: Saitama Seibu Lions

Hokkaido Nippon-Ham Fighters Team Overview
Nippon-Ham managed to halt their three-game losing streak against Fukuoka, but only scraped a 3-3 draw with Seibu. Prior to that, they suffered heavy defeats to the league leaders, falling 1-14, 4-5, and 2-3. Offensively, they remain a threat thanks to Franmil Reyes, who ranks among the league's leaders in batting average and home runs. However, the visitors’ current form is clearly a step down from what they showed in August. Their bullpen boasts some reliable relievers for late-game situations, but this season Arihara has too often left them with difficult jams to escape.
Match Results: Hokkaido Nippon-Ham Fighters
⚾ Starting Pitchers
Natsuki Takeuchi, a left-hander, carries a 2.71 ERA over 20 starts this season, posting an 11-6 record. Through 129.2 innings pitched, he has allowed 110 hits, struck out 100 batters, and given up 43 runs, with a WHIP of 1.03. Takeuchi has delivered 15 quality starts and thrown two complete games. He rarely issues free passes and consistently provides Seibu with reliable innings nearly every outing.
Kohei Arihara, a righty, owns a 4.02 ERA in 14 starts, going 6-7. Over 87.1 innings, he has surrendered 89 hits, tallied 61 strikeouts, and conceded 47 runs, with a WHIP of 1.27. Arihara has notched nine quality starts, two complete games, and a pair of shutouts. While flashes of dominance remain, his consistency this season has notably dipped compared to previous years.
⭐ Editor’s Prediction
The hosts’ main advantage lies in their starting pitcher. Takeuchi outperforms Arihara in ERA, WHIP, quality start percentage, and overall traffic control. Seibu, prior to their recent draw, had won three out of four games. Nippon-Ham remain a dangerous offensive side, as highlighted by some high-scoring head-to-head clashes, but they have failed to win any of their last four outings. Seibu should be able to navigate the first six or seven innings with relative comfort before turning things over to their bullpen. The head-to-head series has been closely contested, so a blowout is unlikely-if Seibu capitalize on their starting pitching edge and seize one or two key moments against Arihara or the early relievers, that should be enough. We’re backing a Seibu win.