Washington Nationals at Boston Red Sox: Final Score & Recap

The Boston Red Sox defeated the Washington Nationals 6-3 at Fenway Park on June 29, 2026, pulling away from a game that looked competitive early but was effectively decided by the first two innings. The DiamondIQ model entered the contest giving Boston a 49 percent chance of winning, but by the final out that figure had climbed to 100 percent, reflecting just how thoroughly the Red Sox controlled the outcome. Boston struck first and decisively in the bottom of the first, with Carlos Narváez drawing a strikeout call against Miles Mikolas that shifted win probability 6.9 points in Boston's favor, part of a four-run first inning that set the tone for the evening. The Red Sox added another run in the second, and though Washington mounted a brief challenge with two runs in the sixth on a CJ Abrams double off Ranger Suarez that swung win probability 9.6 points toward the Nationals, it proved too little against a Boston club that had already built a substantial cushion.

The decisive sequence came in the bottom of the second, where Jarren Duran's lineout against Mikolas registered as the game's fourth-largest win-probability swing at plus 8.2 points for Boston, a reflection of how the Red Sox were consistently converting high-leverage situations. Washington's best hope faded in the top of the seventh when Nasim Nuñez grounded into a double play off Danny Coulombe, a minus 9.0 point swing that extinguished any remaining Nationals momentum. Among individual performers, Ranger Suarez led all pitchers with a plus 12.2 percent WPA contribution, while Coulombe added 5.0 and Tyron Guerrero contributed 4.5. On the offensive side, Narváez paced Boston's batters at plus 9.0 percent WPA, with Duran close behind at plus 7.9 percent. For Washington, Abrams was the lone bright spot, finishing at plus 7.0 percent WPA and plus 1.0 RE24, though his sixth-inning double came far too late to alter the final result.