The Rockies are batting .314 at home. The Braves have the next highest home batting average at .277, which is 37 points behind the Rockies.

Take Colorado out of Coors Field, though, and the Rockies' offense isn't scary at all. It's far below average in fact. The Rockies rank 14th in the National League in road batting average at .225 and are 13th in the NL in road homers. Colorado is averaging 3.1 runs in its last six away games.

The Rockies open a series today at Chase Field, which has become much more of a pitcher's park. They draw All-Star Zach Greinke, who is 9-3 with a 2.90 ERA.

Greinke usually can be counted on to hold up his end. But what about Colorado starter Antonio Senzatela? His current form is good - 2-0 with a 2.50 ERA in his last three starts. He also has a 1.89 ERA in his last three road starts and is 1-0 with a 2.13 ERA in two starts versus Arizona this year.

The Under has cashed in 79 percent of Senzatela's last 15 road starts.

The Diamondbacks rank 12th among the 15 National League teams in home batting average and home runs. Arizona hasn't scored more than four runs in any of its last five games.

Arizona also is likely to be without outfielder David Peralta. He's the Diamondbacks' third-leading hitter and is tied for third in team RBI's. Peralta is dealing with a sore right shoulder.

Each team's closer has been shaky lately, but both teams were idle on Thursday. So the bullpens will be fresh.