The Houston Astros start the second-half of the season with the No. 1 spot in USA TODAY Sports' MLB power rankings.

But don't look back, their reign of nine straight weeks at the top spot is being challenged by the re-hot Los Angeles Dodgers.

The Dodgers have won 26 of their last 30 games and have a one game advantage in the win column over the Astros. The Dodgers’ plus-163 run differential is also the best in National League history for a team heading into the All-Star break.

From 1 to 30, how they stack up based on voting from our 10-person panel:

TEAM. MOVEMENT

1. Houston Astros: --

►Anxiously await the return of Dallas Keuchel and Collin McHugh.

2. Los Angeles Dodgers: --

►Do they have a shot at winning 110 games or more?

3. Washington Nationals: +1

►Who needs a bullpen when you have Max Scherzer?

4. Arizona Diamondbacks: -1

►Club needs just 17 more wins to tie 2016 total (69).

5. Boston Red Sox: +2

►Begin second half with an eight-game homestand against Yankees, Blue Jays.

6. Colorado Rockies: -1

►Just 5-13 since boasting the NL's best record on June 21.

7. Cleveland Indians: +1

►Terry Francona expected to rejoin the club to start second half.

8. New York Yankees: -2

►Aaron Judge slugging home runs that still haven't landed yet.

9. Milwaukee Brewers: --

►NL Central leaders have the third-easiest schedule in the second half.

10. Tampa Bay Rays: +2

►How long until prospect Brent Honeywell and his screwball make MLB debut?

T-11. Minnesota Twins: -2

►If the club can only figure out how to win at Target Field (15-24).

T-11. Kansas City Royals: +3

►Buy or sell? Still a burning question.

13. Chicago Cubs: -2

►.239 batting average at the break 28th worst in the majors.

14. Texas Rangers: -1

►Cole Hamels & Yu Darvish have combined to win just 10 games.

15. St. Louis Cardinals: +6

►Rookie Luke Voit making a big first impression.

16. Los Angeles Angels: -1

►Will he be the same Mike Trout after missing 39 games with an injured thumb?

17. Baltimore Orioles: -1

►Pitching staff (5.07 ERA) proving to be the Achilles' heel once again.

18. Seattle Mariners: --

►The playoff drought likely to continue unless GM Jerry DiPoto makes a move.

19. Atlanta Braves: +1

►Open the second have with 13 games against the Diamondbacks, Dodgers and Cubs.

20. Pittsburgh Pirates: -1

►Is Andrew McCutchen deadline trade bait?

21. Miami Marlins: +4

►Michael Jordan, Pitbull lend celebrity to Marlins ownership bids.

22. Toronto Blue Jays: -5

►Once-potent offense ranks 14th in the AL in runs scored.

23. New York Mets: --

►Is this the end of the road for manager Terry Collins?

24. Detroit Tigers: --

►Is it football season yet?

25. Cincinnati Reds: +2

►Will the Reds trade All-Star shortstop Zack Cozart?

26. Chicago White Sox: -4

►Where will Jose Quintana finish the season?

27. Oakland Athletics: -1

►Yonder Alonso continues to be bright spot on struggling club.

28. San Diego Padres: --

►MLB-worst minus-128 run differential but own 20-18 record last month and half.

29. San Francisco Giants: --

►Madison Bumgarner set to return from April bike accident.

30. Philadelphia Phillies: --

►On pace to finish last in its division for the third time in four years.