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, September 7.

Rankings from last week are in parenthesizes.

1. (1) Washington Nationals – 4.00

The Nationals are running away with the National League East and have a 99.8% chance of making the playoffs, which is why they have time to let Rafael Soriano work through his problems.

2. (3) Los Angeles Dodgers – 3.93

Yasiel Puig leads the team's position players in WAR (3.6), but he was dropped to seventh in the order on Sunday.

3. (2) Oakland Athletics – 3.82

The A's are 14-20 since August 1 and the American League West title is slipping away. If they don't right the ship soon, they'll be home in early October.

4. (6) Seattle Mariners – 3.79

Robinson Cano and Kyle Seager have combined for 11.8 WAR this season, the best producing pair of positional players in baseball.

5. (5) Baltimore Orioles – 3.77

Baltimore has the biggest lead of any division leader (9.5 games) and they edge is only growing.

6. (4) Los Angeles Angels – 3.76

7. (8) Pittsburgh Pirates – 3.68

8. (7) San Francisco Giants – 3.59

9. (11) Cleveland Indians – 3.56

10. (9) Detroit Tigers – 3.55

11. (10) Atlanta Braves – 3.43

12. (13) Tampa Bay Rays – 3.40

13. (14) Kansas City Royals – 3.38

14. (12) Milwaukee Brewers – 3.37

15. (15) St. Louis Cardinals – 3.36

16. (16) Toronto Blue Jays – 3.32

17. (19) Miami Marlins – 3.18

18. (20) New York Yankees – 3.17

19. (22) New York Mets – 3.12

20. (T17) San Diego Padres – 3.09

21. (21) Chicago Cubs – 3.08

22. (T17) Cincinnati Reds – 3.06

23. (23) Philadelphia Phillies – 2.90

24. (24) Boston Red Sox – 2.86

25. (26) Colorado Rockies – 2.80

26. (25) Chicago White Sox – 2.75

27. (28) Houston Astros – 2.71

28. (27) Arizona Diamondbacks – 2.67

29. (29) Minnesota Twins – 2.54

30. (30) Texas Rangers – 2.18

 

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