Boston Red Sox at Kansas City Royals: Final Score & Recap
Line Score
| Team | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | R | H | E |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| BOS | 0 | 2 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 4 | 11 | 1 |
| KC | 1 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 3 | 8 | 1 |
The Story
The Boston Red Sox edged the Kansas City Royals 4-3 at Kauffman Stadium on May 20, 2026, completing the comeback win on the road. Kansas City had taken an early lead with a run in the first and two more in the fifth, but Boston answered with two runs in the second and the decisive two-run swing in the seventh to claim the victory. The DiamondIQ model opened the game with Kansas City holding a 49 percent win probability, but Boston's late-game execution steadily closed that gap to zero.
The single most impactful moment of the game came in the top of the seventh inning, when Jarren Duran hit a home run off Steven Cruz that swung win probability 27.6 percent in Boston's favor. That swing, combined with Duran's cumulative game line of plus-30.3 percent WPA and plus-1.9 RE24, made him the clear offensive driver of the win. Kansas City had briefly threatened to change the complexion of the game in the fifth, when Elias Díaz connected for a home run off Connelly Early, a blow worth plus-20.5 percent WPA that gave the Royals momentum and nudged the DiamondIQ model's estimate sharply toward the home side. Díaz finished as the game's second-most impactful batter at plus-23.1 percent WPA and plus-1.8 RE24. The Royals' best remaining opportunity came in the eighth, but Jac Caglianone's strikeout against Jovani Morán represented a 16.5 percent swing against Kansas City, effectively draining their last serious threat.
Boston's bullpen ultimately secured the result. Jovani Morán posted plus-16.5 percent WPA with his eighth-inning work, Greg Weissert led all pitchers at plus-17.1 percent WPA, and Michael Wacha contributed plus-15.5 percent WPA, with the three combining to shut down Kansas City's lineup across the final frames. In the ninth, Aroldis Chapman retired Lane Thomas on a flyout, a play worth plus-13.1 percent WPA for Boston, before Maikel Garcia's groundout to end the inning added another plus-21.4 percent swing as Boston stranded any final Kansas City hope and preserved the one-run victory.