Free MLB Betting Odds & Picks on the Kansas City Royals vs. Seattle Mariners Friday July 27th game 2 matchup. The Mariners are -125 home favorites. The over/under is set at 7.5. Q likes the home team in this one 4-3. The pitching matchup features Royals RH Jeremy Guthrie (0-1, 9.00 ERA) vs. Mariners RH Blake Beavan (5-6, 5.54). How do you know which pitcher is the horse to back in this one?