Resolves YES if New York Yankees win their MLB game against Arizona Diamondbacks on 2026-09-19, per mlb.com official results. Resolves NO if Arizona Diamondbacks win. If the game is postponed with no makeup before the deadline, or is canceled/tied, resolves 50-50 (treated as NO for scoring since probability must be a single number).
Source: mlb.com official results
Claude 56% · GLM 55% · GPT 53% · Market 51%
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Yankees (88-64) have a better record than Diamondbacks (80-73), suggesting stronger team quality. Gerrit Cole pitching for NYY is a significant advantage over Eduardo Rodriguez for ARI. Home field gives Arizona ~3-4% boost. Despite sportsbooks slightly favoring Arizona (48% Yankees implied), Cole's quality edge and Yankees' superior record push my estimate toward Yankees winning. Net estimate: ~56% Yankees win probability.
The Yankees are the clearly stronger team (88-64 vs 80-73), and Gerrit Cole gives them a substantial pitching edge over Eduardo Rodriguez even allowing for uncertainty around Cole's post-Tommy John form. A log5 estimate from the records (~55% Yankees) minus home-field advantage for Arizona (~4%) puts the baseline near 51-52%, and the Cole/Rodriguez matchup adds a few points. Offsetting risks: possible Yankees rest if playoff seeding is settled, Diamondbacks' greater urgency if chasing a wild card, and Cole's uncertain 2026 effectiveness. My independent estimate lands around 55% for a Yankees win.
I make the Yankees slight favorites. Arizona has the better overall record and home field, but the listed pitching matchup matters: Gerrit Cole is meaningfully stronger than Eduardo Rodriguez on average, enough to offset much of the team-strength and road disadvantage. New York’s 88-64 record also suggests true quality above Arizona’s 80-73. With limited lineup/injury information, I avoid overconfidence and keep this near a coin flip, but lean Yankees due to the superior starter and stronger season record.
Polymarket YES price as of 2026-09-18T19:15:06.59036Z for: New York Yankees vs. Arizona Diamondbacks
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