The Houston Astros handed the Cleveland Guardians a 9-2 defeat at Progressive Field on April 20, 2026, a result that was far from expected given the DiamondIQ model's pre-game estimate of a 70 percent home win probability for Cleveland. The Astros struck first with two runs in the opening inning, but Cleveland answered with a run of their own, keeping the game close through three innings. The turning point arrived decisively in the top of the fourth, when Houston broke the game open against Slade Cecconi. Isaac Paredes delivered the most impactful blow of the night, a home run that shifted Houston's win probability by plus 11.3 percent, followed immediately by a Brice Matthews double worth plus 10.6 percent and a Carlos Correa single adding another plus 9.1 percent. That four-run fourth inning effectively ended Cleveland's chances of recovering the game that the model had initially projected as theirs to win.
Spencer Arrighetti was the standout performer of the night, finishing as the game's top pitcher by a wide margin with a plus 18.8 percent win probability added. He navigated Cleveland's lineup with authority, and while George Valera's single in the bottom of the third generated plus 9.5 percent for the Guardians and briefly sustained some hope, a Chase DeLauter pop out in the bottom of the second had already cost Cleveland minus 10.1 percent in win probability in a sequence that stalled their early momentum. Arrighetti's ability to strand threats and limit damage was central to Houston's ability to build its lead comfortably across the later innings.
Among position players, Carlos Correa led all batters with plus 14.6 percent win probability added and a RE24 of plus 1.8, while Isaac Paredes posted plus 13.2 percent and led the group with a RE24 of plus 2.5, reflecting his home run's outsized run-expectancy impact. Yainer Diaz contributed plus 12.5 percent in win probability added despite a slightly negative RE24 of minus 0.3, suggesting his contributions came in high-leverage moments that shifted probability without generating proportional run value. Houston added insurance runs in the fifth, seventh, and ninth innings to finalize the 9-2 margin, with Cleveland's two errors compounding an already difficult evening for the home side.
Analysis generated by DiamondIQ's model.