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, April 20.

Rankings from the end of the 2013 regular season are in parenthesizes.

1. (2) Oakland Athletics – 5.08

The Athletics haven't missed Jarrod Parker and A.J. Griffin -- yet. The pitching staff ranks first in QS, WHIP, BAA and second in ERA.

2. (3) Atlanta Braves – 4.85

Atlanta is hitting for power (.417 SLG), but are 22nd in runs scored.

3. (1) Milwaukee Brewers – 4.65

The Brewers have won 13 of 16 since losing two of their first three.

4. (4) Los Angeles Dodgers – 4.26

Clayton Kershaw is still on the DL, but the rest of the Dodgers' pitchers have picked up the slack. They have 10 QS in 19 games and a 2.85 ERA (fifth).

5. (16) Miami Marlins – 3.98

The Marlins, who a .627 OPS (worst in baseball) in 2013, rank second with .760 OPS early on. It helps that Giancarlo Stanton is hitting .303/.384/.605 with six HRs and 26 RBIs.

6. (18) Colorado Rockies – 3.89

Charlie Blackmon is enjoying the month of April. The 27-year-old right-fielder is hitting .406/.440/.594.

7. (14) Cincinnati Reds – 3.86

Alfredo Simon is having a career-season at 32. He has a 0.86 ERA, 0.81 WHIP and 13 strikeouts in three starts.

8. (5) Washington Nationals – 3.76

Stephen Strasburg has 42 strikeouts in 27 innings, but a 5.33 ERA through five starts.

9. (7) San Francisco Giants – 3.70

Brandon Belt has the power numbers, but Angel Pagan has paced this offense. He's hitting .356/.397/.466.

10. (19) San Diego Padres – 3.65

The Padres have the third-worst offense in terms of OPS and have been held together Andrew Cashner and Tyson Ross.

11. (10) Detroit Tigers – 3.61

12. (21) St. Louis Cardinals – 3.60 

13. (20) Kansas City Royals – 3.44

14. (24) Texas Rangers – 3.33 

15. (T8) Tampa Bay Rays – 3.32

16. (T8) Los Angeles Angels – 3.27

17. (17) Boston Red Sox – 3.19 

18. (13) New York Yankees – 3.10

19. (26) Baltimore Orioles – 3.09 

20. (12) Pittsburgh Pirates – 3.07

21. (15) Toronto Blue Jays – 3.03

22. (6) Seattle Mariners – 2.97

23. (23) Cleveland Indians – 2.70

24. (25) Chicago Cubs – 2.48

25. (27) Minnesota Twins – 2.46 

26. (22) Chicago White Sox – 2.41

27. (11) Philadelphia Phillies – 2.16

28. (29) New York Mets – 2.01

29. (28) Houston Astros – 1.35

30. (30) Arizona Diamondbacks – 0.94

 

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