Seattle Mariners at Cleveland Guardians Picks and Prediction for Sunday, June 28, 2026
Use Code WWWC Progressive Field in Cleveland hosts the final match of this three-game AL series at 1:40 PM ET as the Seattle Mariners (42-41) look to take the series finale against the Cleveland Guardians (42-40) in a matchup with AL implications. The season series between Seattle and Cleveland is even at 2-2 heading into this weekend, and Sunday's finale features two of the most intriguing young starters in the American League squaring off in a game that neither team can afford to treat as an afterthought. The Mariners have scored three or fewer runs in 11 straight games, an offensive drought that has coincided with a stretch that dropped them back to .500, making Sunday's series finale an urgent performance test for a lineup that has gone quiet at the worst possible time. Read on to find out who takes the series in our Mariners vs. Guardians prediction. Don't go down on strikes! Get our top MLB Predictions and increase your bankroll!
Mariners Send Hancock in the Best Season of His Career
Emerson Hancock (5-4, 3.60 ERA, 1.02 WHIP) has provided the Mariners with consistent length, working at least five innings in each of his first 13 starts. He has fanned at least six batters in 10 of those outings, a durability and swing-and-miss profile that represents a dramatic evolution from the injury-prone, inconsistent arm who spent the better part of three seasons shuffling between Seattle and Triple-A Tacoma. Hancock lowered his arm slot to sidearm, changed how he throws his sinker, and began throwing more sweepers and four-seam fastballs, a mechanical reinvention that produced a then-best nine strikeouts and no hits in six innings against the Cleveland Guardians earlier this season, then a 14-strikeout, no-walk outing on May 2.
Hancock was aiming for his first career All-Star selection and carried a stellar 2.74 ERA, 0.95 WHIP, and 73:17 K:BB across 75.2 innings into a recent road start against Washington before some regression crept into his ERA over the last few turns. His Statcast profile tells a story of harder contact than his numbers suggest, his average exit velocity allowed sits at 90.7 and his hard-hit rate at 44.6%, both figures that create some concern about the sustainability of a .284 wOBA against, but the swing-and-miss arsenal through his sweeper and four-seamer has been real and consistent enough to keep Cleveland's lineup honest across nine innings.
The Mariners have been 1-10 with runners in scoring position across their recent stretch and have not scored more than three runs in a game since June 12, a lineup-wide slump that makes run support for Hancock the central concern. Julio Rodriguez leads Seattle in slugging at .421 with 29 extra-base hits and a .247 batting average, providing the primary power threat in a lineup that has otherwise struggled to put crooked numbers on the board against quality pitching.
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Williams Has Been One of the AL's Best Stories, Guardians Missing Key Pieces
Gavin Williams (9-3, 3.20 ERA, 1.08 WHIP, 94 strikeouts across 81.2 innings) earned the win Wednesday against the Yankees, allowing three runs on four hits and one walk in 5.1 innings, his 13th consecutive start pitching at least five innings. He has struck out at least six in 10 of those 13 outings. The 26-year-old right-hander has been one of the most consistent starters in the American League all season, posting a 4-0 record with a 2.59 ERA, 0.96 WHIP, and 33:6 K:BB across 31.1 innings over his last five starts, a stretch of dominance that has positioned him firmly in AL Cy Young conversations.
Williams has provided consistent length for the Guardians in 2026 and has fanned at least six batters in 10 outings this season. He holds a 94:25 K:BB ratio across 81.2 innings, a control profile that gives Cleveland's defense every opportunity to let the ball be put in play without the free baserunners that tend to cost starting pitchers against contact-heavy lineups. His three-pitch mix of a riding four-seamer, a late-breaking sweeper, and an improving changeup creates a sequencing challenge that Seattle's struggling offense, the worst lineup in baseball with runners in scoring position over the last 11 games, will find exceptionally difficult on Sunday afternoon at Progressive Field.
Cleveland is missing José Ramírez, Angel Martínez, and Chase DeLauter, three hitters who supplied a significant portion of the Guardians' home run and RBI production before suffering injuries. The remaining Cleveland lineup has become increasingly dependent on creating isolated scoring opportunities. Guardians hitters are slugging just .366 this season, second lowest in MLB, and are batting just .169 against pitchers who have thrown at least 80 pitches in the game this season.
Mariners vs. Guardians Picks
- Money Line Pick: Cleveland Guardians
Williams's current form is the cleanest pitching advantage available on Sunday's AL slate. A 9-3 record, 3.20 ERA, and 94 strikeouts across 81.2 innings against a Mariners lineup that is 1-for-its-last-10 with runners in scoring position makes the Guardians the natural home side to back at Progressive Field. The Guardians are 13-2 when they have hit two or more home runs this season, second best in MLB, and their home advantage at Progressive Field against a lineup in historic scoring drought gives Cleveland all the structural advantages heading into this series finale. Take the Guardians to win at home.
- Over/Under Pick: Under 7.5 Runs
Both offenses enter with serious production concerns: Seattle has not scored more than three runs in 11 straight games, and Cleveland is missing Ramírez, Martínez, and DeLauter, three hitters who supplied a significant portion of the Guardians' run-scoring capacity. Two young starters with genuine swing-and-miss arsenals and sub-3.30 ERAs facing lineups operating well below their offensive ceilings is the exact profile where the Under delivers. The Cleveland Guardians have hit the team total Under in 19 of their last 30 games, a lean that runs directly through the Williams start cycle. Take the Under 7.5 runs and back a tight, low-scoring game decided by the quality of starting pitching.
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