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 | 0 | 0 | 0 | 0 | 2 | 1 | 0 | 0 | 3 | 9 | 0 |
| KC | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 6 | 0 |
The Story
The Boston Red Sox silenced Kauffman Stadium on May 18, 2026, defeating the Kansas City Royals 3-1 behind a pair of late-inning offensive bursts and stout pitching down the stretch. The game was scoreless through five innings before Boston broke it open, and the DiamondIQ model's estimate, which opened with Kansas City holding a 53% pre-game win probability, closed at 0% in favor of the Red Sox by the final out.
The decisive moment came in the top of the sixth when Willson Contreras drove a home run off Seth Lugo, a swing that shifted win probability by 23.5 points in Boston's favor and gave the Red Sox a lead they would not relinquish. Kansas City responded with a run in the bottom of the seventh on a Jac Caglianone double off Sonny Gray that moved the needle 16.2 points toward the Royals, briefly tightening the contest. However, Justin Slaten answered by striking out Isaac Collins to strand the threat, a strikeout that swung win probability 7.4 points back toward Boston, and Garrett Whitlock followed by inducing a Salvador Perez groundout in the eighth that represented an 8.8-point swing in Boston's direction. Aroldis Chapman closed out the ninth, with a Collins groundout in the final frame actually reflecting a 14.4-point positive swing for Boston as the Royals exhausted their final opportunity.
Caglianone led all batters with a WPA of plus-18.4 and an RE24 of plus-1.8, while Contreras finished just behind at plus-18.3 WPA and plus-1.0 RE24, making the two the central offensive figures despite playing for opposite sides. On the mound, Slaten paced Boston's pitching staff with a plus-19.0 WPA contribution, with Whitlock adding plus-13.3 and Sonny Gray contributing plus-8.9 in a losing effort for Kansas City.