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The Seattle Mariners dominated the Cleveland Guardians 20–8 on March 20 at Goodyear Ballpark in a spring training blowout that shattered the Vegas total line of 1. Seattle's offense was relentless, collecting 26 hits and 5 home runs while driving in all 20 runs, posting a .830 OPS that reflected disciplined plate discipline with a .364 on-base percentage. The Mariners' pitching staff held Cleveland to just 9 hits despite allowing 8 walks, striking out 13 and posting a 6.78 ERA in what was ultimately a lopsided affair. Cleveland managed only 9 hits with a .248 average and .794 OPS, though they did hit 3 homers and drove in 7 runs; their pitchers surrendered 26 hits and 20 earned runs, an unsustainable 5.30 ERA that exposed defensive vulnerabilities with 1 error. This explosive offensive performance by Seattle suggests the Mariners' lineup has developed considerable depth heading into the regular season, while Cleveland's pitching staff will need significant refinement before Opening Day.