Arizona Diamondbacks at Boston Red Sox: Final Score & Recap

The Boston Red Sox routed the Arizona Diamondbacks 11-1 at Fenway Park on August 17, 2026, a result that the DiamondIQ model's estimate reflected thoroughly — moving from a 55 percent pre-game home win probability all the way to 100 percent by game's end. Boston built its advantage methodically across the middle innings, scoring in five of the first seven frames and never allowing Arizona any foothold. The Diamondbacks managed just four hits and committed two errors, while the Red Sox collected 16 hits without a miscue in a thoroughly one-sided afternoon.

The turning point came early, as the bottom of the second inning set the tone against Arizona starter Mitch Bratt. Nick Sogard's two-run double was the single highest-leverage swing of the game, adding 7.7 percent to Boston's win probability, and Eli White followed with a single that pushed that figure up an additional 6.9 percent. Bratt continued to struggle into the third, where Caleb Durbin delivered a single worth 7.4 percent in win probability added. Zack Littell relieved and absorbed further damage, including a Ceddanne Rafaela double in the fourth and a Willson Contreras home run in the fifth that added 5.3 and 3.4 percent to Boston's probability respectively.

On the individual ledger, Caleb Durbin paced all hitters with a plus-11.5 percent WPA and a plus-1.6 RE24, while Nick Sogard contributed plus-8.5 percent WPA and Willson Contreras added plus-7.0 percent WPA alongside a plus-1.1 RE24. On the mound, Brayan Bello was the story for Boston, generating plus-14.3 percent WPA in what was a dominant pitching performance that kept Arizona's offense almost entirely in check throughout the contest.