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, June 8.

Rankings from last week are in parenthesizes.

1. (1) Oakland Athletics – 4.66

The Athletics have a 98.4% chance of making the playoffs, the highest in the Major Leagues, according to ESPN.

2. (6) Washington Nationals – 4.11

After seven wins in 10 games, the Nationals enter the week in the three-way tie for first in the National League East.

3. (2) San Francisco Giants – 4.10

Angel Pagan has the Giants running away with the NL West. He is hitting .323/.373/.433 as the team's lead-off hitter.

4. (4) Los Angeles Dodgers – 3.89

Having Clayton Kershaw in nice, but what about Zack Greinke? The right-hander is 8-2 with a 2.62 ERA, 1.18 WHIP and 89 strikeouts in 79 innings.

5. (5) Atlanta Braves – 3.81

Hitting has been the issue for the Braves in 2014. They have a team slash line of .241/.302/.381 with a .683 OPS (23rd).

6. (7) Toronto Blue Jays – 3.76

7. (3) Milwaukee Brewers – 3.62

8. (9) Miami Marlins – 3.54

9. (12) St. Louis Cardinals – 3.52

10. (10) Detroit Tigers – 3.51

11. (11) Los Angeles Angels – 3.49

12. (8) Colorado Rockies – 3.39

13. (T15) Cleveland Indians – 3.28

14. (19) Seattle Mariners – 3.27

15. (18) Pittsburgh Pirates – 3.24

16. (13) Boston Red Sox – 3.18

T17. (14) Cincinnati Reds – 3.14

-- (24) Chicago Cubs – 3.14

19. (20) Baltimore Orioles – 3.05

T20. (T15) New York Yankees – 2.94

-- (21) New York Mets – 2.94

22. (25) Chicago White Sox – 2.88

23. (27) Kansas City Royals – 2.83

24. (23) Texas Rangers – 2.82

T25. (17) San Diego Padres – 2.81

-- (26) Houston Astros – 2.81

27. (30) Arizona Diamondbacks – 2.71

28. (28) Tampa Bay Rays – 2.67

29. (22) Philadelphia Phillies – 2.60

30. (29) Minnesota Twins – 2.50

 

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