As Spring Training hits its stride and the Mariners move past their first week of games, Luis Castillo — La Piedra — takes the rock for the first time in 2026. Castillo, despite an up-and-down regular season, was an absolute hero during the postseason and we are all looking forward to seeing what he has in store in 2026!
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It’s an interesting-look starting lineup for the M’s tonight, with the only real MLB players being Victor Robles in center, Josh Naylor at first, Miles Mastrobuoni at third, and Leo Rivas at short. This writer is especially excited to see how Cole Young performs under the lights tonight at second base.
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Likely pitchers to follow Luis on the mound include Casey Lawrence, Carlos Vargas, José Ferrer, Tyler Cleveland, and Josh Simpson.
Starting Lineup | 2.27.26 | 6:10 PM MT Diamondbacks at Mariners (logos) | Banner Health (logo) CF – Lawlar 2B – Tawa 1B – Smith C – McCann SS – Vargas LF – Waldschmidt DH – Vukovich 3B – Groover RF – Robinson SP – Nelson Watch: DBACKS.TV The graphic features an image of Pavin Smith smiling pregame. He is wearing a black Diamondbacks jersey, white baseball pants, and a teal Spring Training cap.
The Snakes are sending out Ryne Nelson (first Stanek now this guy? Someone has to teach pitchers how to spell “Ryan”) to the mound first tonight. Nelson has been a fixture for Arizona over the past three years, and set a career best ERA of 3.39 in 2025. It is also Nelson’s first start of the spring.
First Pitch: 5:10pm PT
Watch: Mariners.TV, Mariners.com, and (if you’re outside the PNW like our esteemed Kate Preusser) MLB Network
Listen: Seattle Sports 710AM
As a reminder, we’re hoping to build our community before Opening Day for what promises to be an exciting 2026 season and we’d love to have you with us. If you haven’t yet, sign up (it makes the site function much better for you, as a bonus) and jump on in to the conversation! This is especially helpful on radio-only games to keep the conversation flowing. And don’t worry about making a mistake – it’s spring training for all of us.
