Nippon-Ham Fighters vs Saitama Prediction 15 May 2026
📡 Nippon-Ham return home after a 3-5 loss to Lotte, while Seibu travel to Sapporo sitting second in the Pacific League and boasting a strong head-to-head pitching record. The prediction here hinges on the visitors’ starter: Kaima Taira enters with a 0.95 ERA, and Seibu’s team ERA stands at 1.64 in the season series against Nippon-Ham.
Head-to-Head
📊 The season series is tied at 3-3, but Seibu hold a significant edge in runs scored-29 to 16. Nippon-Ham are hitting just .186 with only three home runs in these matchups, while Seibu boast a .241 average and have gone deep seven times. That’s a key difference: the head-to-head record is even, but the visitors have shown superior quality both at the plate and on the mound.
H2H Stats Matches and Previous Teams Results

Hokkaido Nippon-Ham Fighters Team Overview
Nippon-Ham sit fourth in the standings and return home after an away series against Lotte, still searching for a sense of control. In their head-to-head meetings with Seibu, they have managed just 16 runs across six games, often coming up short in key contact situations. Kota Tatsu can provide some length on the mound, but he must contain the visitors’ power hitting-Seibu have already launched seven home runs in this matchup, and a single rough inning could swing the game.
Match Results: Hokkaido Nippon-Ham Fighters

Saitama Seibu Lions Team Overview
Seibu currently sit second in the standings and have the edge in head-to-head meetings against Nippon-Ham, outperforming what would be expected from an even matchup. They lead in runs scored, home runs, and, crucially, team ERA. A significant advantage is having Taira on the mound: despite a brief rough outing earlier, he has already delivered several strong performances this season, including seven shutout innings against Rakuten. For Seibu, this is a prime opportunity to claim a road win through their pitching staff and capitalize on one or two productive stretches at the plate.
Match Results: Saitama Seibu Lions
⚾ Starting Pitchers
Kota Tatsu, a right-hander, enters with a 3.29 ERA over six starts and holds a 2-3 record. Against Seibu, he’s posted a 2.57 ERA but took the loss in their only head-to-head meeting. His recent outings: 6 IP / 5 H / 5 K / 3 R, 7 IP / 5 H / 6 K / 3 R, 7 IP / 2 H / 7 K / 1 R. He consistently delivers solid innings, though he’s allowed three runs in each of his last two starts.
Kaima Taira, also a righty, boasts a stellar 0.95 ERA through six games with a 2-1 record. He’s logged a 3.00 ERA and earned the win in his lone head-to-head start against Nippon-Ham. His latest performances: 1 IP / 2 H / 1 K / 2 R, 7 IP / 2 H / 10 K / 0 R, 6 IP / 4 H / 3 K / 2 R. While a short recent relief appearance skewed his line, his season numbers remain elite.
⭐ Editor’s Prediction
Seibu look like the stronger pick here, thanks to their head-to-head record and the advantage on the mound. While Nippon-Ham can put up a fight at home, they lag behind in offensive production and average contact-factors that become even more critical against Taira. Tatsu is capable of keeping the game close, but Seibu consistently find power at the plate in these matchups and boast a significantly better team ERA. If Taira returns to his usual workload after a short outing against Lotte, the visitors should be able to dictate the early innings and keep Nippon-Ham’s offense in check. For this one, we’re backing a Seibu win.
