Tanner Bibee and Logan Gilbert (Photo by Imagn Images)

Guardians vs. Mariners Predictions, Picks & Odds For Opening Day Game 1

Originally posted on Total Pro Sports | By Heena Singh | Last updated Mar 26, 2026 11:49 AM ET

Guardians vs. Mariners: The Cleveland Guardians kick off their 2026 campaign on the road against the Seattle Mariners in an Opening Day showdown.

The Guardians enter the season looking to find more consistency after an up-and-down 2025 campaign. While flashes were there, they struggled to put together complete performances, especially against stronger opponents. Opening on the road against a playoff-caliber team won’t make stuff any easier.

Seattle, on the other hand, comes in with momentum and expectations. The Mariners have been tough to beat at home and continue to build around a strong pitching core and emerging offensive stars.

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Guardians vs. Mariners Starting Pitchers

Tanner Bibee gets the ball for Cleveland, finally making his first Opening Day start after missing last year’s opportunity. He posted a 4.24 ERA in 2025 and will need to be sharp early against a lineup that can do damage quickly.

For Seattle, Logan Gilbert makes his second straight Opening Day start. Despite missing time last season, he still finished with a solid 3.44 ERA. When healthy, Gilbert has shown he can control games and limit scoring chances.

Guardians vs. Mariners Betting Odds

Team	Spread	Total	Money Line
Cleveland Guardians	+1.5	O 6.5	+155
Seattle Mariners	-1.5	U 6.5	-185

The odds clearly lean toward Seattle in this matchup. With home-field advantage and a stronger recent track record, the Mariners are positioned as the favorites heading into Opening Day.

Guardians vs. Mariners Expert Prediction

From a matchup standpoint, Seattle holds the edge thanks to pitching depth and bullpen strength. With closer Andrés Muñoz anchoring the late innings, they’ve got a reliable way to shut games down.

Julio Rodriguez (Image Credits: Imagn)

Offensively, Julio Rodríguez will be a key factor. He’s a popular prop pick to rack up hits, runs, and RBIs, especially with his aggressive approach early in the season.

Best bets lean toward the Mariners moneyline and the under 6.5 runs, pointing to a controlled, pitching-heavy game. There’s also value in Seattle covering the run line if things break their way late.

Score Prediction: Mariners 4, Guardians 2

Note: Odds are subject to change, and outcomes are never guaranteed.

This article first appeared on Total Pro Sports and was syndicated with permission.

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