Diamondbacks vs Mariners Betting Picks ARI @ SEA Picks Alex Smart $39.95 View Picks 1 pick included Diamondbacks Mariners O/U Nick Parsons 20-18 MLB Last 30 Days $39.95 View Picks 1 pick included Diamondbacks Mariners O/U Ray Monohan 3-0 MLB Last 3 Days $39.95 View Picks 1 pick included Diamondbacks Mariners ML Scott Pritchard 15-13 MLB Last 30 Days $39.95 View Picks 1 pick included Diamondbacks Mariners O/U