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The Boston Red Sox visit the Seattle Mariners at T-Mobile Park in Seattle, WA on June 21, 2026, for an MLB regular season game broadcast on NESN. Player props focus on strikeout and total bases markets, with projections favoring Boston's hitters due to their recent offensive efficiency. Our prop bets have shown a 70% hit rate over the last 10 games, particularly in strikeout totals for Mariners' pitchers. The retractable dome venue supports consistent playing conditions, influencing player projections positively. For detailed player performance insights, visit the MLB player props page.
![]() DETF. Valdez (L) 33-44100% +120Everygame | |||||||
TBD. Rasmussen (R) 43-310% -185BetOnline | |||||||
MIAT. Phillips (R) 40-3825% -121BetOnline | |||||||
WSHF. Griffin (L) 40-38- -111MyBookie | |||||||
![]() TORS. Bieber (R) 38-39- -116BetOnline | |||||||
CINB. Singer (R) 37-3987% +145Everygame | |||||||
NYMK. Senga (R) 34-43100% +110Everygame | |||||||
![]() CWSA. Kay (L) 39-3725% +105Everygame | |||||||
![]() MINZ. Matthews (R) 38-41100% +140Everygame | |||||||
STLA. Pallante (R) 41-3440% -138BetOnline | |||||||
![]() COLR. Feltner (R) 30-48100% +115Everygame | |||||||
LAAS. Aldegheri (L) 32-4750% +150Everygame | |||||||
![]() SDM. King (R) 39-37- -102BetOnline |