The Opsera is a statistic RealGM Executive Editor Chris Reina created in order to objectively rank teams by how well they hit (OPS) and pitch (ERA). 

In order to determine the Opsera rating for each, we take their OPS, multiply that number by 10 to move the decimal point over one place to the right and then subtract their ERA from that number.  

All statistics are through Sunday, August 10.

Rankings from last week are in parenthesizes.

1. (1) Oakland Athletics – 4.08

The Athletics have a 99.6% chance of making the postseason, the highest in baseball.

2. (3) Los Angeles Dodgers – 3.91

If anyone can rival Oakland's balanced attack it's the Dodgers. They rank seventh in OPS (.724) and fifth in ERA (3.33).

3. (2) Washington Nationals – 3.85

Anthony Rendon has been Washington's most valuable offensive player with a .277/.333/.465 slash line and 3.3 oWAR.

4. (6) Seattle Mariners – 3.74

Robinson Cano is hitting .330/.399/.465, but Seattle has still struggled offensively. The second baseman's power numbers are at their lowest since 2008.

5. (4) Los Angeles Angels – 3.69

Mike Trout (6.2) leads all of baseball in WAR, but the Angels have depth with four other players that rank among the Top 40 in the AL -- Howie Kendrick, Erick Aybar, Kole Calhoun and Albert Pujols.

6. (T8) Baltimore Orioles – 3.64

7. (5) Detroit Tigers – 3.63

T8. (7) Milwaukee Brewers – 3.55

-- (12) Pittsburgh Pirates – 3.55

10. (13) Toronto Blue Jays – 3.51

11. (14) Tampa Bay Rays – 3.48

T12. (T8) Atlanta Braves – 3.41

-- (16) Cincinnati Reds – 3.41

14. (11) San Francisco Giants – 3.38

15. (15) Cleveland Indians – 3.37

16. (19) Kansas City Royals – 3.33

17. (T8) St. Louis Cardinals – 3.32

18. (23) San Diego Padres – 3.23

19. (20) New York Yankees – 3.16

20. (17) New York Mets – 3.15

21. (T21) Miami Marlins – 3.03

22. (24) Chicago Cubs – 3.00

23. (18) Boston Red Sox – 2.96

24. (T21) Chicago White Sox – 2.85

25. (25) Colorado Rockies – 2.73

26. (27) Philadelphia Phillies – 2.70

27. (26) Arizona Diamondbacks – 2.69

28. (28) Minnesota Twins – 2.62

29. (29) Houston Astros – 2.53

30. (30) Texas Rangers – 2.20

 

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