How to watch Cal Raleigh, Julio Rodríguez and other Mariners in World Baseball Classic

The Seattle Mariners will have a heavy presence in the 2026 World Baseball Classic, with 18 players from the organization taking part. Cal Raleigh, a 2025 All-Star on the U. S. roster, is among the marquee names, joining Julio Rodríguez, Randy Arozarena and Andrés Muñoz on national teams. This guide lays out when Raleigh and his Mariners teammates could appear and highlights the most compelling M’s vs. M’s matchups to follow.

Cal Raleigh: when he could play in Pool B

Cal Raleigh is listed with the United States roster for Pool B play in Houston and could factor into the USA lineup during pool games. One of the most anticipated pool games featuring Mariners talent is Mexico vs. USA, scheduled for Monday, March 9 at 5: 00 p. m. ET in Houston. That matchup presents the immediate possibility of Raleigh delivering power in a late-innings role against Mexico’s bullpen, which includes Mariners reliever Andrés Muñoz.

While specific playing time and lineup decisions will be made by team managers, the Mexico vs. USA game is a clear slate for potential head-to-head moments involving Raleigh. Fans should monitor roster announcements and game-day lineups for final confirmation of Raleigh’s role in each contest.

Top Mariners vs. Mariners matchups to watch in the World Baseball Classic

The tournament offers several intriguing intra-club confrontations, where teammates from the regular season could face one another on the international stage. Key matchups drawn from pool play schedules include:

• Canada vs. Colombia (Pool A, Puerto Rico) — Saturday, March 7 | 8: 00 a. m. ET, Puerto Rico. This game could pit a veteran former Mariners starting pitcher who returned from retirement for Canada against a 21-year-old Colombian infielder who is on the fringe of the major-league roster. The contrast of past Mariners experience and emerging club prospects makes this a storyline to follow.
• Mexico vs. USA (Pool B, Houston) — Monday, March 9 | 5: 00 p. m. ET, Houston. A high-leverage pool matchup that could feature 60-homer power from a U. S. slugger and late-inning work from a Mexican relief ace, both with Mariners ties. This is the most likely game for Cal Raleigh to appear against Mariners reliever Andrés Muñoz.
• USA vs. Italy (Pool B, Houston) — Tuesday, March 10 | 6: 00 p. m. ET, Houston. Lefty-on-lefty scenarios could surface here, with a power-hitting left-handed outfielder representing Italy and a left-handed U. S. reliever from the Mariners organization available to be called on in tight moments.
• Venezuela vs. Dominican Republic (Pool D, Miami) — Wednesday, March 11 | 5: 00 p. m. ET, Miami. Star center fielder Julio Rodríguez could have a marquee matchup if this game becomes a must-win for advancement. A right-handed reliever who had breakout form with the Mariners could be a key piece in the bullpen for Venezuela, setting up a potential right-on-right confrontation late in the game.

The top two teams from each pool will advance to a single-elimination final tournament, where even more Mariners vs. Mariners meetings could occur if those national squads progress. That potential creates additional stakes for early pool games and raises the importance of each matchup listed above.

What fans should do to catch the action

With multiple Mariners represented across different pools and locations, fans who want to follow Cal Raleigh, Julio Rodríguez and the rest should track the pool schedules and check game-day lineup notices. The listed dates and times provide the primary windows to watch potential M’s vs. M’s moments, and later rounds could produce additional cross-team showdowns if clubs advance.

Recent updates indicate these matchups and schedules are set for the pool stage, but details such as final lineups and pitching decisions may evolve as managers finalize rosters and game plans. Game-day confirmations will determine which Mariners players actually appear in any given matchup.