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The upcoming MLB game between the Boston Red Sox and Seattle Mariners is set for June 20, 2026, at T-Mobile Park in Seattle, WA. Broadcasted on NESN, this matchup features the Mariners as favorites with a Moneyline of -120 at BetOnline, while the Red Sox stand at +109. The run line opened at +1.5 -110 for Boston and -1.5 -110 for Seattle but has shifted to +1.5 -195 and -1.5 +170 respectively, indicating betting odds movement favoring Seattle. Totals are set at 7.5 with the under at -120. These betting lines provide crucial insights into market sentiment ahead of this Saturday contest. For comprehensive MLB betting odds, visit our MLB odds page.
ATLB. Elder (R) 48-279% -126Bookmaker | |||||||
NYYE. Rodríguez (R) 46-2933% -104Bet105 | |||||||
MIAR. Gusto (R) 39-3887% +133Everygame | |||||||
![]() DETK. Montero (R) 32-4436% -110Bet105 | |||||||
TBN. Martinez (R) 42-3111% -129BetOnline | |||||||
HOUK. Teng (R) 36-4210% -125Bet105 | |||||||
KCS. Kolek (R) 32-4543% +110Everygame | |||||||
![]() CHCS. Imanaga (L) 40-3767% +111Everygame | |||||||
![]() TEXN. Eovaldi (R) 36-40- -141Bet105 | |||||||
![]() COLM. Lorenzen (R) 30-47100% +130Everygame | |||||||
![]() ATHJ. Perkins (R) 38-3950% -121BetOnline | |||||||
SEAL. Gilbert (R) 39-390% -132Bet105 | |||||||
LADE. Sheehan (R) 49-288% -205BetOnline | |||||||
PHIZ. Wheeler (R) 41-350% -190BetOnline |