The Seattle Mariners dismantled the Cleveland Guardians 20-8 at Goodyear Ballpark on March 20, 2026, in a game that was effectively decided in the second inning. The DiamondIQ model entered the contest giving Cleveland a 67 percent chance of winning at home, but that figure collapsed to zero by the final out, reflecting one of the most lopsided offensive performances of the spring.
The second inning was the turning point in every measurable sense. Seattle sent a wave of batters to the plate and scored 10 runs in the frame, while Cleveland managed only two runs in response and could not claw back into the game. The single most impactful moment, from a win-probability standpoint, came on a Brayan Rocchio flyout in the bottom of the second off Gabe Mosser, which swung the DiamondIQ model's estimate by negative 16.0 percent against Cleveland, extinguishing a potential rally. On the offensive side, Leo Rivas reached via a key strikeout situation that shifted the model 15.9 percent in Seattle's favor, while Dominic Canzone followed with a home run off Tyler Thornton that added another 10.1 percent. Brendan Donovan's double off Logan Allen contributed 7.9 percent to Seattle's win probability, and Cole Young added a home run off Allen for another 4.6 percent swing in the Mariners' favor.
Individually, Rivas finished as Seattle's top performer by WPA at plus-16.6 percent with a RE24 of plus-0.4, while Canzone posted a plus-10.7 percent WPA and led the group with a RE24 of plus-3.3, reflecting his direct run-production impact. Donovan rounded out the top three at plus-8.4 percent WPA and a RE24 of plus-2.6. On the mound, Mosser was Seattle's standout reliever, generating plus-8.8 percent in win probability added. Cleveland finished with just 9 hits against Seattle's 26, and the Guardians never found sustained answers for a Mariners lineup that scored across six of nine innings.
Analysis generated by DiamondIQ's model.