The Arizona Diamondbacks and the Colorado Rockies played a high-scoring game last night when the D'Backs won the opener of the four-game set 7-6. Both sides have plenty of power in their lineups, and I think we'll see a lot of action over home plate in tonight's match-up as well.

Here are my keys to the game:

1. Pitching - Arizona hands the ball to Archie Bradley (3-3, 4.83 ERA) who'll make his eighth start of the year. Throwing him out here under the lights at a hitters park like Coors Field could prove costly as he has posted a 7.88 ERA in three night starts this year compared to a 2.88 ERA in day games. The over is 11-2-1 in Bradley's last 14 starts overall. The Rockies counter with 26 year old rookie Tyler Anderson (0-1, 2.25) who'll make his third start in the majors. The left-hander held the toothless Padres to one run on six hits in 6 1/3 innings in his debut here in Denver, but now he'll face a team that is batting .282 against southpaws this season.

2. The Bullpens - The Rockies' relievers rank among the very worst in the major leagues with a 4.52 ERA, and the D'Backs' are in the bottom third with a 4.02 mark. Neither teams starter made it through the fifth inning last night so the bullpens will be far from fresh for this contest.

3. X-Factor - Four of the last five meetings at Coors Field have gone over the total.

Selection: This is a play on ARI@COL to go OVER the total (10*)