Across the diamond, Will Warren is coming off the worst start of his 2026 season. He lasted 3.0 innings against Philadelphia on July 26, allowing 6 earned runs before exiting. His 2026 ERA sits at 4.41 over 102 innings, with 36 walks, a control rate that puts him constantly behind hitters and pitching out of mistakes. The sportsbook's outs market tells you what the books actually think: Warren's line sits at 15.5 outs with the Under priced at -160, implying roughly a 61% probability he doesn't complete five full innings. That is the most revealing signal on today's board. His only clean recent outing was a 5-inning, 1-ER effort against Washington on July 12, and that kind of start has been the exception all season.

The team context amplifies the pitching gap. The Cubs are 20-10 over their last 30 games and 30-22 at home this season. The Yankees have gone 13-17 in that same 30-game window, have lost five of their last eight games, and arrive with multiple regulars in genuine cold stretches. Austin Wells is batting .162, Trent Grisham .216, Ryan McMahon .208. Against that backdrop, Pete Crow-Armstrong is running a 1.210 OPS over the last seven days with 24 home runs on the season, and Alex Bregman has posted a 1.179 OPS in that same span. As Cubs manager Craig Counsell put it: "This group has just stabilized. That's not a concern. The group has performed. I think those questions are gone."

Wrigley Field carries a home run park factor of 1.1, and wind is the variable that makes the biggest difference in this MLB afternoon start. Wind blowing out turns this park into a launching pad and compounds Warren's fly-ball vulnerability, having allowed 15 HR in 102 innings this season. Wind blowing in supports both pitchers and compresses the total. Neither bullpen is elite: the Yankees at 3.14 ERA have the better unit, while the Cubs pen at 4.49 ERA is the softer pressure point if this game stays close late. Check the forecast before committing to any total bet.

• Imanaga has allowed 0 earned runs in his last two starts combined (13.0 innings) and owns a 2.00 ERA over his last eight outings. He faced this Yankees lineup last July and went 7 innings with 1 earned run. Today's Yankees offense is colder than that group, with multiple lineup spots hitting well under .220 in recent weeks.
• Warren's outs market is the most informative signal in this game: the Under on 15.5 outs is priced at -160, which the market assigns roughly a 61% probability he doesn't complete five full innings. An early exit trailing changes game script, brings in Chicago's 4.49 ERA bullpen, and is the primary scenario that could limit the Cubs' winning margin below 1.5 runs.
• Imanaga has struck out 4, 4, and 5 batters in his last three starts, three consecutive unders on the 5.5 strikeout line. His recent profile reflects pitch-to-contact efficiency rather than strikeout hunting, consistent with the Cubs rotation posting a 2.85 ERA over their last 21 games. The Yankees' .233 team average and .725 team OPS do not create a high-strikeout environment.
• Pete Crow-Armstrong enters with a 1.210 OPS over the last seven days and 24 home runs this season, making him the most dangerous bat in this game. He faces a pitcher allowing 1.32 HR per nine innings at a park carrying a 1.1 HR park factor. His career BvP against Warren in 2025 is 3 PA, 0.000 OPS, a sample too small to extract signal but offering zero positive evidence against him today.
• The first inning is the most contested market here. Imanaga carries a 4.32 first-inning ERA and 1.4 first-inning WHIP, and the Yankees score in the first inning in 54.1% of their games (59 of 109 this season). Warren offsets that with a strong recent NRFI streak (8-2 over his last 10 starts) that limits the Cubs' first-inning scoring probability.
• This is Game 1 of the series with fresh bullpens on both sides. If Warren exits before the fifth inning, the Yankees can deploy their full relief corps (3.14 ERA), which limits the Cubs' run-scoring window in the middle innings and puts the 4.49 ERA Cubs pen under pressure to close the game out cleanly.

The prop to circle: Imanaga Under 5.5 strikeouts at even money. Three straight outings with four or five strikeouts, each an under on this exact line, from a pitcher whose recent mechanics reflect pitch-to-contact efficiency rather than swing-and-miss pursuit. Even money on a three-start pattern with a clear underlying cause is the cleanest value in this game. Bregman Over 1.5 total bases at +126 is the best secondary prop: he is the hottest bat on the Cubs' roster entering today, and Warren's persistent command issues create the favorable counts that disciplined hitters turn into extra bases. One caveat covers everything: check the Wrigley wind direction before locking in the total. Wind blowing hard out of the southwest changes the park entirely, and the 4.41 ERA pitcher on the mound in those conditions becomes a serious liability to any under ticket.

For the full slate, see our MLB picks today, NRFI picks, and player props.