The San Diego Padres defeated the Chicago Cubs 9-7 at Petco Park on April 27, 2026, in a game that was far more competitive in the early innings than the final margin suggests. San Diego jumped ahead with three runs in the first, but the Cubs answered with a four-run third inning anchored by a Moisés Ballesteros home run off Randy Vásquez that swung win probability by +36.2 percentage points, the single largest play of the game by that measure. That blast gave Chicago a lead and, according to the DiamondIQ model's estimate, briefly pulled the Cubs back into genuine contention in a game the model had opened with a 64 percent pre-game probability favoring the home side.
San Diego reclaimed control in the fifth inning, where the most consequential sequence of the Padres' comeback unfolded. A Manny Machado double off Matthew Boyd shifted win probability +8.1 points, and Nick Castellanos followed with a single off Ben Brown that added another +21.6 points, restoring San Diego's advantage on the strength of a two-run frame. Ty France then extended the Padres' cushion in the seventh with a triple off Phil Maton worth +16.0 points of win probability, effectively closing out Chicago's realistic path back into the game. A Michael Busch strikeout against Adrian Morejon in the top of the seventh, costing the Cubs 9.3 points of win probability, represented the Cubs' last significant missed opportunity.
France finished as the game's most efficient run-producer by RE24, posting a +3.8 mark to lead all players, while Ballesteros led all batters in WPA at +30.9 despite his team falling short. Castellanos contributed +20.5 WPA for San Diego. On the mound, Jason Adam was the most valuable reliever by WPA at +10.8, followed by Adrian Morejon at +9.5, as the Padres bullpen secured the final four innings of a 14-hit San Diego performance. The DiamondIQ model's estimate closed at 100 percent in favor of the Padres.
Analysis generated by DiamondIQ's model.