10* National League SIDE OF THE WEEK on Colorado Rockies.

The Rockies come into Arizona tonight as losers of five straight, and they should be pretty desperate to snap this losing skid. With a struggling pitcher going for the Diamondbacks, this looks like a good spot for Colorado to snap out of this slump. My money is on the Rockies.

Here are my keys to the game:

1. Pitching - Tyler Chatwood will get the nod for the Rockies, and he's already beaten Arizona once this year. He gave up just a pair of runs on seven hits over 6.1 innings in a 4-3 win at Chase Field in his season debut. He's also been good on the road overall, going 2-0 with an 0.68 ERA. The Diamondbacks will send Robbie Ray to the mound, and he was torched for five runs on right hits and a pair of walks in just three innings in his last outing.

2. Batter vs. Pitcher - Charlie Blackmon is set to come off the 15 day DL, and he's 5-for-8 lifetime versus Ray. The southpaw will have to keep an eye on Nolan Arenado, who is batting .292 versus left-handed pitching.

3. X-Factor - Tyler Chatwood is 2-0 with a 3.32 ERA in four career starts versus Arizona

Selection: This is a play on the Colorado Rockies (10*)