Free MLB Betting Odds & Picks on the Seattle Mariners vs. Kansas City Royals Tuesday July 17th game 2 matchup. The Mariners are +121 road underdogs. The over/under is set at 9.5. Q likes the road team in this one 7-4. The pitching matchup features Mariners RH Blake Beavan (3-6, 5.92 ERA) vs. Royals (RH) Ryan Verdugo (NR). How do you know which pitcher is the horse to back in this one?