MLB Recap · April 4, 2023

Toronto Blue Jays at Kansas City Royals: Final Score & Recap

TOR4
Final
KC1

Line Score

Team123456789RHE
TOR0011010104110
KC010000000140

The Story

The Toronto Blue Jays took the series opener at Kauffman Stadium on April 4, 2023, defeating the Kansas City Royals 4-1 behind a balanced offensive effort and strong pitching throughout. The DiamondIQ model opened the game with Kansas City holding a 54% win probability, but that edge steadily eroded as Toronto built its lead across the middle innings, and the model's estimate reached 0% in favor of the home side by the final out. The Blue Jays scattered their four runs across four different innings, collecting 11 hits against Royals pitching while committing no errors, and Kansas City managed just four hits in response.

The game's most decisive swing came in the top of the sixth inning, when Daulton Varsho connected on a home run off Carlos Hernández, a play the DiamondIQ model valued at plus 12.1% in win probability for Toronto. That blow proved to be the knockout punch, and Varsho finished as the game's top offensive performer by WPA at plus 14.3% with a RE24 of plus 1.2. Matt Duffy was nearly as impactful, posting a plus 12.4% WPA and plus 1.0 RE24 on the strength of his contributions throughout the lineup, while Whit Merrifield's two-run double in the top of the fourth off Kris Bubic had earlier shifted the balance by plus 6.9%. Kansas City's lone bright spot came from Franmil Reyes, whose second-inning home run off Yusei Kikuchi registered a plus 7.4% WPA for the Royals, though his lineout to close the ninth added another plus 6.3% for Kansas City simply by avoiding further damage.

On the mound, the Toronto bullpen was the story behind the numbers. Tim Mayza led all pitchers with a plus 14.6% WPA, edging out starter Yusei Kikuchi, who contributed plus 14.5% WPA in what was a commanding outing against a Royals lineup that managed little sustained offense. Yimi García added plus 6.7% WPA in support, and Jordan Romano closed it out cleanly in the ninth. Nate Eaton's strikeout against Kikuchi in the bottom of the fifth, valued at negative 6.2% for Kansas City, illustrated how thoroughly the Blue Jays' pitching staff neutralized any momentum the home side attempted to generate.

Analysis generated by DiamondIQ's model.

Win Probability

755025TOR bats firstFinalKC win %TOR win %
DiamondIQ model home win probability across the game (pre-game 54% → final 0%).

Biggest Plays by Win-Probability Added

Daulton Varsho Home Run
Top 6th · off Carlos Hernández
+12.1%
Franmil Reyes Home Run
Bot 2nd · off Yusei Kikuchi
+7.4%
Whit Merrifield Double
Top 4th · off Kris Bubic
+6.9%
Franmil Reyes Lineout
Bot 9th · off Jordan Romano
+6.3%
Nate Eaton Strikeout
Bot 5th · off Yusei Kikuchi
-6.2%

Top Batters by WPA

Daulton Varsho+14.3%+1.2 RE24
Matt Duffy+12.4%+1.0 RE24
Franmil Reyes+8.1%+0.6 RE24

Top Pitchers by WPA

Full box score, pitch data, and the play-by-play timeline
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