The Chicago Cubs close out their series against the Boston Red Sox on Sunday, September 27, 2026, with first pitch scheduled for 3:05 PM ET. This is a regular season contest with real standings implications still on the line deep into September. The Cubs are on the road for this one — no Wrigley ivy, no home crowd — just a tight ballgame against an American League club as both teams push toward the finish line of the 2026 regular season. Marquee Sports Network carries the action for Cubs fans, while 104.3 The Score has the radio call.
Cubs vs. Red Sox Pitching Matchup: Sunday, September 27, 2026
As of this writing, neither the Cubs nor the Red Sox have confirmed a probable starter for Sunday's game. That's a situation worth monitoring closely. Late-September pitching decisions are rarely random — roster construction, workload management, and playoff positioning can all factor into who gets the ball on a Sunday afternoon in the final week of the regular season. Check back for starter updates as the Cubs organization makes its announcement.
Without confirmed starters, the bullpen depth on both sides becomes an even bigger storyline. September roster expansions give both clubs options, and how each manager deploys his relief corps in a game of this weight could swing the result.
Keys to Watch: Chicago Cubs at Boston Red Sox
- Starting pitcher announcement: With no probable starters listed for either side, the first major development of Sunday will be who actually takes the mound. A bullpen game opens different strategic possibilities and puts a premium on the first hitter through the order setting the tone early.
- Cubs offense against an unknown arm: Facing an unannounced starter — or a bulk reliever — requires the Cubs lineup to stay disciplined and not chase early. Working counts and getting into the Boston bullpen is the blueprint regardless of who starts.
- Late-inning execution: September games carry weight. Every run matters. The Cubs need clean at-bats with runners on base and sharp defense to give themselves the best chance to close out this road series on a winning note.
- Road mentality: The Cubs are away from Wrigley Field. Winning on the road in late September against a quality opponent is the kind of résumé-building performance that matters when rosters are evaluated at season's end.
Prediction: Cubs vs. Red Sox, September 27, 2026
With no starters confirmed on either side, this one is genuinely difficult to project with precision. What we can say is that the Cubs have an opportunity to close out a road series strong against a legitimate opponent. The edge goes to whoever gets the pitching decision right first — and whoever's offense takes control of the count early. Call it a competitive, late-season battle that could go either way. Expect a close game. Cubs 4, Red Sox 3.
