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 Monday, July 15th.

Rankings from last week are in parenthesizes.

1. (1) St. Louis Cardinals – 4.14

2. (2) Atlanta Braves – 4.07

3. (3) Boston Red Sox – 4.02

4. (4) Detroit Tigers – 3.99

5. (5) Pittsburgh Pirates – 3.90

6. (7) Cincinnati Reds – 3.79

7. (9) Tampa Bay Rays – 3.67

8. (6) Texas Rangers – 3.66

9. (8) Oakland Athletics – 3.56

10. (10) Los Angeles Dodgers – 3.50

T11. (T14) Colorado Rockies – 3.28

T11. (T14) Washington Nationals – 3.28

13. (11) Arizona Diamondbacks – 3.27

14. (T14) Los Angeles Angels – 3.24

15. (17) Baltimore Orioles – 3.23

16. (19) Cleveland Indians – 3.18

17. (12) Chicago Cubs – 3.16

18. (20) Philadelphia Phillies – 3.11

T19. (18) Toronto Blue Jays – 3.10

T19. (22) New York Yankees – 3.10

21. (13) Kansas City Royals – 3.02

22. (21) Milwaukee Brewers – 3.01

23. (23) San Francisco Giants – 2.96

24. (24) New York Mets – 2.95

25. (25) Seattle Mariners – 2.90

26. (26) Chicago White Sox – 2.85

27. (27) San Diego Padres – 2.67

28. (28) Minnesota Twins – 2.60

29. (29) Miami Marlins – 2.45

30. (30) Houston Astros – 1.85