The Cleveland Guardians and Seattle Mariners will open their seasons with a matchup between right-handed pitchers Tanner Bibee and Logan Gilbert, according to a March 20 announcement. This game is notable as the only Major League Baseball Opening Day contest featuring two defending division champions.
Both teams have been recognized for developing strong pitching talent in recent years. The Guardians are looking to build on their late-season momentum from last October, when they unexpectedly won the American League Central. The Mariners return to T-Mobile Park after reaching the American League Championship Series in 2025.
Tanner Bibee will make his first career Opening Day start after missing last year’s opener due to food poisoning. In 2025, he posted a 12-11 record with a 4.24 earned run average over 31 starts. Despite facing challenges during the season, including career highs in ERA, fielding independent pitching (4.34), and walks plus hits per inning pitched (1.23), Bibee remained durable by tying his career high in starts and setting a new personal best for innings pitched at 182 1/3. He was particularly effective in September, helping lead Cleveland to its only postseason win against Detroit. “I sat and reflected a lot about this last year this offseason,” Bibee said earlier this spring. “This year definitely feels like way more of a clean slate. It feels like there’s a lot less stress to it. I’m excited to go out there [this season].”
Logan Gilbert will take the mound for Seattle after making one previous Opening Day start. In 2025, he recorded a 6-6 record with a 3.44 earned run average over 25 starts but spent seven weeks on the injured list due to an elbow strain—the first injury of his career that kept him sidelined for an extended period. Gilbert returned late in the season for key games, including appearances in both the Division Series and Championship Series, though he acknowledged not being at his best during those outings. “That’s always something I took a lot of pride in, and it could almost be a little unhealthy way too,” Gilbert said regarding his durability as a pitcher. “Because there’s only so much you can control… So that’s always the biggest goal for me is 32 starts, 200 innings.” In 2024, Gilbert led Major League Baseball with over 208 innings pitched.
The matchup highlights each team’s focus on homegrown pitching talent as they begin their campaigns as reigning division champions.
