Here is today's Mariners starting lineup and opening pitching matchup as they host the Athletics at the Peoria Sports Complex where the WWConverge + CSS team will be on site! Haggerty and Castillo photos by _LivLyons Miller photo by Bennett Scarborough #SeaUsRise #SpringTraining #SeattleMariners #Baseball #MLB #MarinersBaseball #SeattleBaseball #OaklandAthletics #Athletics #SamHaggerty #LuisCastillo #MasonMiller