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 24.

Rankings from last week are in parenthesizes.

1. (3) Washington Nationals – 4.00

For the first time since early in the season, the Athletics aren't at the top of our rankings. Washington has won nine of their last 10 games and have a 99.4% chance of making the playoffs.

2. (1) Oakland Athletics – 3.95

The mighty A's are scuffling. Losers of seven of their last 10 games, they've been surpassed by the Los Angeles Angels in the American League West.

3. (4) Seattle Mariners – 3.85

Seattle is going to have to settle for a Wild Card and they received a scare on Sunday when Robinson Cano left with dizziness.

4. (2) Los Angeles Dodgers – 3.83

L.A. has the second-best record in the National League, but no have less than a five-game lead over the Giants in the NL West.

5. (5) Los Angeles Angels – 3.74

The Angels have been patient and while everyone talked about the Athletics, they remained within striking distance. The AL West title would be theirs if the season ended today.

6. (6) Baltimore Orioles – 3.63

7. (T8) Milwaukee Brewers – 3.60

8. (11) Tampa Bay Rays – 3.55

T9. (T8) Pittsburgh Pirates – 3.51

-- (T12) Atlanta Braves – 3.51

-- (15) Cleveland Indians – 3.51

12. (7) Detroit Tigers – 3.47

13. (14) San Francisco Giants – 3.43

14. (16) Kansas City Royals – 3.39

15. (17) St. Louis Cardinals – 3.31

16. (10) Toronto Blue Jays – 3.25

T17. (T12) Cincinnati Reds – 3.18

-- (18) San Diego Padres – 3.18

19. (21) Miami Marlins – 3.17

20. (22) Chicago Cubs – 3.10

21. (20) New York Mets – 3.08

22. (19) New York Yankees – 3.07

23. (23) Boston Red Sox – 2.89

24. (25) Colorado Rockies – 2.79

25. (24) Chicago White Sox – 2.76

26. (26) Philadelphia Phillies – 2.73

27. (27) Arizona Diamondbacks – 2.67

28. (28) Minnesota Twins – 2.64

29. (29) Houston Astros – 2.61

30. (30) Texas Rangers – 2.18

 

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