Money Line: -125.00 Seattle (Away)
The Mariners have won five of their last six overall, and they are just four games out of a wild card spot.
Chris Flexen will toe the slab for Seattle, and he's been on fire in the second half of the season. He's 1-0 with a 2.67 ERA in his last five starts.
The D'Backs hand the ball to Tyer Gilbert, who is coming off a poor performance. He allowed five runs on eight hits in five innings in a home loss to San Diego his last time out.
The Diamondbacks are 1-9 in their last 10 interleague games.