Free MLB Betting Odds & Picks on the Boston Red Sox vs. Seattle Mariners Tuesday night game 2 matchup. The Mariners are -108 home favorites. The over/under is set at 7. Q likes the home team in this one 4-1. The pitching matchup features Franklin Morales, LHP 1-1, 3.12 ERA vs. Felix Hernandez, RHP 5-5, 3.36 ERA. Boston is coming to town and looking to make an example of the M’s.