Tohoku Rakuten vs Saitama Prediction 15 September 2026
📡 Rakuten head into their home game on the back of a seven-game losing streak. After dropping three straight to Nippon-Ham, they were swept by Lotte without scoring a run, and then fell 3-5 to Orix. Seibu remain second in the standings at 73-54-4 and have dominated this season’s head-to-head against the league’s bottom side. An intriguing subplot for this prediction: Ryosuke Moriaki is set to make his first start of the season after exclusively pitching out of the bullpen so far.
Head-to-Head
📊 Seibu have come out on top in eight of their last ten head-to-head meetings, outscoring their opponents 39 to 25. Their dominance was especially evident in August, when they strung together six consecutive wins with scorelines of 6-4, 2-0, 3-1, 8-4, 1-0, and 4-1. Over the course of the season, Seibu hold a commanding 14-7-1 record, with a run differential of 89 to 65.
Head-to-head statistics Tohoku Rakuten - Saitama

Tohoku Rakuten Golden Eagles Team Overview
Rakuten have completely lost their form after a promising start to September, dropping seven straight games since September 4. Their 47-78-1 record is the worst in the Pacific League. Kazuki Murabayashi is hitting .263, while Luke McCusker leads the team with 21 home runs and 61 RBIs. In the bullpen, Naomasa Fujihira has racked up 23 saves, but Rakuten rarely give him a lead to protect-over their last four games, they have managed just 10 runs.
Match Results: Tohoku Rakuten Golden Eagles

Saitama Seibu Lions Team Overview
Seibu wrapped up their home series against Nippon-Ham on a sour note, settling for a 3-3 draw before suffering a heavy 1-7 defeat. Still, they had previously taken three out of four games against Orix. They currently sit second in the standings, holding a 1.5-game cushion. Natsuo Takizawa is batting .284, while Nevin has launched 20 home runs this season. The bullpen remains one of Seibu’s main strengths: Hiroshi Kaino has notched 20 saves and Hibiki Shinohara boasts 28 holds. With Rakuten struggling for form, the visitors’ roster depth could prove to be a key factor.
Match Results: Saitama Seibu Lions
⚾ Starting Pitchers
Itsuki Ito, a right-hander, enters with a 3.46 ERA over three appearances-two of them starts-and holds a 2-0 record. In 13 innings pitched, he has allowed 12 hits, notched 13 strikeouts, and surrendered 5 runs, with a WHIP of 1.62. He’s delivered one quality start so far. The sample size remains limited, but nine walks highlight some control issues-potentially problematic against Seibu’s more disciplined lineup, which could capitalize on extra baserunners.
Ryosuke Moriwaki, also a righty, boasts a 2.00 ERA across 20 outings, though this will be his first start of the season. Over 18 innings, he’s given up 16 hits, struck out 11, and allowed 5 runs, posting a 1.17 WHIP to go along with a 1-1 record and seven holds. His move into the starting role likely signals an early call to the bullpen, so Seibu are set to rely on a committee approach from their pitching staff in this matchup.
⭐ Editorial Prediction
With Moriaki stepping in as the starter, Seibu add an element of unpredictability, but the overall matchup still tilts in favour of the visitors. Rakuten are on a seven-game losing streak and have dropped eight of their last ten head-to-heads against Seibu, including six straight in this series. Ito boasts a solid 2-0 record, but his 1.62 WHIP and nine walks over 13 innings mean Seibu should have plenty of opportunities to get runners on base. After Moriaki’s likely short outing, the visitors can turn to a reliable bullpen, while Rakuten have consistently struggled both to generate runs and to keep opponents in check throughout September. With a 25.5-win gap between the teams over the season, that margin is simply too significant to overlook. Our pick: Seibu to win.