Here is today's Mariners starting lineup and pitching matchup as the team hosts the Cardinals for a three-game slate at T-Mobile Park! Caballero and Kirby photos by MathewBermudez / Mathewb_Photography Matz photo by Jeff Roberson #SeaUsRise #STLCards #SeattleMariners #Baseball #MLB #MarinersBaseball #SeattleBaseball #StLouisCardinals #JoseCaballero #GeorgeKirby #StevenMatz