Red Sox vs Cubs Prediction 25 September 2026
📡 The second matchup of the day stands out due to the way both teams manage their resources across two games. Boston turn to Brayan Bello, who is coming off his best start of the season, while the Cubs hand the ball to David Peterson. With both clubs having already clinched playoff spots, depth and bullpen condition following the opener become key factors in this game. Boston appear to have a strong case here, especially with their starting pitcher.
Boston have won six out of their last ten games and maintain a slight edge over the Cubs.
📊 Boston have claimed victory in six of their last ten meetings with the Cubs. While these head-to-head clashes are spread across several seasons-limiting their predictive value-the Red Sox still hold the overall edge. In recent series, Boston have consistently found ways to come out on top, whether the games have turned into high-scoring affairs or tighter, low-scoring battles between these two sides.
Head-to-head statistics Red Sox - Cubs

Bello heads into his second start after tossing eight innings and racking up 11 strikeouts against Tampa.
The Red Sox have struggled offensively in recent weeks and currently hold a negative run differential over their last ten games. However, their pitching staff consistently keeps them in contention. This becomes especially crucial in the second game of a doubleheader, where it’s tough to predict a high-scoring affair in advance. Boston tend to play close to even at home, but they’ve posted strong numbers this season against left-handed pitching, which is another factor working against Peterson.
Match Results: Boston Red Sox

Peterson has shown significant improvement in September, but the Cubs head into the doubleheader having scored just two runs in each of their last three games.
The Cubs are 5-5 over their last ten games, tallying 47 runs in that span. Before heading to Boston, they wrapped up their series against Miami with a 2-1 victory, but managed just two runs in each of those three contests. While this team can turn things around quickly, the second game of a doubleheader could force some lineup rotation and more frequent use of the bench.
Match Results: Chicago Cubs
⚾ Starting Pitchers
Brayan Bello enters with a 6-7 record, a 4.49 ERA, and a 1.37 WHIP, but his recent outings have been far more impressive than those season-long numbers suggest. On September 19 against Tampa Bay, Bello delivered eight innings of one-run ball, allowing just five hits, issuing no walks, and striking out 11. Earlier in September, he also tossed five scoreless frames against the Angels.
David Peterson has also found his rhythm in his last three starts, conceding just one earned run in each outing, including six strong innings against both Cincinnati and Atlanta. While his season ERA hovers around 4.96, that figure belies his current form. Boston will need to remain patient at the plate, working deep counts and waiting for Peterson to make mistakes.
⭐ Editor’s Prediction
Peterson enters this matchup in solid form, so it’s unlikely Boston will run away with an early blowout. However, Bello is coming off an eight-inning gem, allowing just one run and striking out 11, and the Red Sox have generally performed well against left-handed pitching this season. Boston hold a 6-4 edge in the last ten head-to-head meetings, and the second game of this doubleheader offers them a more favorable home scenario. After Game 1, bullpen depth may be less of a factor, making a starter who can go six or seven innings especially valuable-something Bello is more than capable of delivering right now. Our pick: Boston Red Sox to win the second game of the doubleheader.
