Dan Johnson takes you through his preview, prediction, and pick for today’s Opening Day baseball game between the Seattle Mariners and the Cleveland Guardians.

Seattle opens the season against the Cleveland Guardians in a ballpark that still feels haunted by October. T-Mobile Park hosts its first game since last year’s ALCS, and that gives this opener a little more charge than a standard Game 1 of 162: two clubs trying to start clean, two right-handers with very different run-prevention shapes, and a board that expects every run to be earned. In a park that consistently suppresses offense, this sets up less like an Opening Day fireworks show and more like a leverage game—clean innings, one or two mistake pitches, and a night where the team better built to win a tight one-off should have the edge. Below is my preview, prediction, and pick for today’s Opening Day baseball game between the Seattle Mariners and the Cleveland Guardians.

Here’s how I’ll play it. I’ll be pumping out these predictions for individual games all season, with plenty of coverage here on DraftKings Network. Follow my handle @dansby_edits for more betting plays.

Logan Gilbert finished 2025 with a 3.44 ERA, but the deeper indicators were even cleaner: .280 wOBA allowed, .275 xwOBA, .206 expected batting average, a 32.3% strikeout rate, and just a 5.8% walk rate. He is not just missing bats—he is controlling damage when hitters do connect, with only a 5.2% barrel rate allowed. Tanner Bibee is a good arm, and his late-season run—1.39 ERA over his final five starts with 32 strikeouts—matters, but the full-season contact model is a notch below: .313 wOBA allowed, .297 xwOBA, and an 8.0% barrel rate allowed. In a park that punishes empty contact, the pitcher who allows less damage per ball in play has the edge, and that is Gilbert.

Against the current Seattle roster, Bibee has held hitters to a .200 average, but the expected damage underneath it is louder—a .294 xwOBA with a near 23-degree average launch angle, which is the exact type of contact that can flip a game with one swing. Gilbert’s profile against Cleveland’s projected lineup is cleaner: .207 expected average and a .260 xwOBA in the matchup sample, which lines up with his broader season-long suppression. Layer in the team splits, and the gap widens. Seattle hit .246/.324/.421 with a .746 OPS and 170 home runs against right-handed pitching last season, while Cleveland managed just .227/.299/.380 with a .679 OPS and 123 home runs. In a low-total game, that difference in baseline damage matters more than volume.

Guardians’ Jose Ramírez is still the best hitter on the field, but Seattle’s middle order brings more sustained power against right-handed pitching. Cal Raleigh’s 2025 profile was elite-level damage: .392 wOBA, .371 xwOBA, .547 expected slugging, a 49.6% hard-hit rate, and a 19.5% barrel rate. Julio Rodríguez added 22 home runs and a .792 OPS against righties with a .270 average, giving Seattle two bats that can turn a single mistake into a lead. Cleveland’s offense drops off more quickly behind Ramírez, and that depth difference matters in a park where you may only get two or three real scoring chances.

Guardians vs. Mariners pick, best bet

Both bullpens are capable, but neither creates a disadvantage for Seattle. Andres Muñoz anchors the Mariners’ back end with a 2.91 ERA and 11.5 K/9, supported by Matt Brash (3.10 ERA, 10.7 K/9) and a group that can miss bats in leverage. Cleveland has a strong closer in Cade Smith—2.85 ERA, 30 saves, 11.6 K/9—but this is not a spot where the Guardians have a clear late-inning edge. In a game likely played in the 3-2 or 4-3 range, the cleaner starter plus the slightly stronger lineup profile is enough to carry the side.

The one counterargument is Cleveland’s and Bibee’s late-season surge. The Guardians closed 2025 on a 21-9 run, and Bibee looked like a different pitcher down the stretch. But that is where the park and matchup tighten the logic. This is not a setting where a hot stretch alone creates separation—this is a setting where underlying contact quality and lineup damage decide the game. Seattle’s ability to generate extra-base contact against right-handed pitching, paired with Gilbert’s cleaner suppression profile, is the more stable path in this environment.

The bet is Mariners -1.5 (+125). This feels closer to a -200 ML-range game once you account for Gilbert’s underlying metrics and the gap in righty-facing offense. The script is not built for margin—it is built for control—and Seattle has more ways to create and protect a narrow lead in a park that rewards exactly that.

Josh Naylor to hit a home run (+450) is a my favorite plus-money prop lean on the side; he hit .298 with 14 homers against right-handed pitching last season and carries the kind of pull-side power that can beat any park once. But the primary edge here is the side.

Projected score: Mariners 4, Guardians 2.

Best bet: Mariners -1.5 (+125) vs. Guardians

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