Seattle is playing well going 7-2 in its last nine games. The Mariners have a huge pitching edge and Colorado has a lot of trouble playing in spacious pitching parks such as Safeco Field, which is a total contrast to the Rockies' Coors Field.

Colorado starter Chad Bettis has a 7.58 ERA in his last six starts. To make matters worse, the Rockies also have one of the worst bullpens in the league. The right-handed Bettis is going to have to deal with Nelson Cruz, who is back from a quad injury. Cruz ranks second in the majors in homers with 40. Seattle is 13-3 in its last 16 games versus a righty starter.

Seattle starter Hisashi Iwakuma has allowed two or fewer runs in five of his last seven starts.