The Diamondbacks have scored a meager one run in each of their last three games. Now they are facing the pitcher who I believe is the most underrated in baseball - Logan Gilbert. He has a 1.87 ERA and 0.80 WHIP. I don't see Arizona doing much against Gilbert especially on the road in Seattle's tough pitching park. 

The Mariners have scored four or fewer runs in four of their last five games. They rank 24th in runs and 25th in batting average. So Arizona starter Brandon Pfaadt should prove serviceable here. 

Note, too, that Bill Miller is slated to be the home plate umpire. He's always been good to pitchers.