Mariners vs. Arizona Diamondbacks betting odds and handicapping preview – June 20

Seattle Mariners vs. Arizona Diamondbacks

Free MLB Betting Odds & Picks on the Seattle Mariners vs. Arizona Diamondbacks Wednesday night game 3 matchup. The Mariners are +150 underdogs. The over/under is set at 8.5. Q likes the home team in this one 4-2. He says Jason Vargas doesn’t dominate but the lefty has some savvy and can keep the M’s in the game.