This week's MLB power rankings

NATIONAL LEAGUE

1. Colorado Rockies 1 (last week)

Thriving away from home.

2. Arizona Diamondbacks 3

Spectacular success at Chase.

3. Washington Nationals 2

Harper keeps belting 'em.

4. Los Angeles Dodgers 4

Wood extends scoreless streak.

5. Chicago Cubs 7

Homers hurting Arrieta.

6. St. Louis Cardinals 6

Rockies pound bullpen.

7. Milwaukee Brewers 5

Braun's return was brief.

8. Cincinnati Reds 8

Adleman tosses a gem.

9. Atlanta Braves 9

Garcia on top of game.

10. Pittsburgh Pirates 11

Kuhl can't get on track.

11. New York Mets 10

deGrom gives pen rest.

12. San Francisco Giants 12

Cain gets no support.

13. Miami Marlins 14

Stanton hits them far.

14. San Diego Padres 15

Cordoba raising eyebrows.

15. Philadelphia Phillies 13

Offense really scuffling.

AMERICAN LEAGUE

1. Houston Astros 1

Running away in West.

2. New York Yankees 2

Tanaka takes tough loss.

3. Minnesota Twins 4

Buxton still struggling. 

4. Boston Red Sox 7

Rodriguez is dealing.

5. Baltimore Orioles 3

Asher joins rotation.

6. Cleveland Indians 6

Encarnacion still searching.

7. Tampa Bay Rays 8

Colome gets it done.

8. Texas Rangers 5

No luck on the road.

9. Los Angeles Angels 10

Norris has sore knee.

10. Toronto Blue Jays 15

Back to full strength.

11. Chicago White Sox 12

Abreu picks up pace.

12. Detroit Tigers 9

McCann lost to DL. 

13. Oakland Athletics 13

Shoulder sidelines Graveman.

14. Kansas City Royals 14

Bonifacio stays hot. 

15. Seattle Mariners 11

Momentum remains elusive.