The Colorado Rockies are in D.C. for three games against the Washington Nationals. The teams match up in Denver next week. The Rockies are an amazing 21-13 on the road in D.C. against the Nationals, but Washington swept last year's Nats Park matchup, outscoring the Rockies 36-19 behind Jordan Zimmermann, Stephen Strasburg and Doug Fister. Zimmermann is 5-0 with a 2.20 ERA in his career against Colorado. But he allowed three home runs against the Mets on August 2 in his last start, a 5-2 setback.

Colorado counters with left-hander Jorge De La Rosa who is 5-2 with a 4.07 ERA against the Nationals in eight career starts. The Rockies have won only six games since the All-Star break. The Nationals are 8-12 in that span. Rockies third baseman Nolan Arenado is second in the majors with 80 RBIs, one behind Toronto's Josh Donaldson (81). Bryce Harper is tied for fourth in the majors with 29 homers. The Angels' Mike Trout leads the way with 32. The Rockies lead the National League with 487 runs scored. The Nationals are fifth with 445 runs. Colorado has hit 122 homers, the Nationals 107. The Rockies have hit 56 homers on the road (45.9%). The Nationals have hit 50 homers at home (46.7%). The Rockies have scored 299 runs at home, but only 188 on the road. It's a numbers game. This is the game blog. It's Friday night. It's Friday, Friday Gotta get down on Friday Everybody's lookin' forward to the weekend, weekend Friday, Friday Gettin' down on Friday Everybody's lookin' forward to the weekend --Rebecca Black Let's go.