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 Tuesday morning. Last week's rankings are in parentheses.

1. (3) Los Angeles Dodgers – 5.11

L.A.'s four-game win streak is over, but they top this week's rankings. 

2. (1) St. Louis – 5.05

At 19-6, St. Louis is off to their best start since 1900.

3. (2) Kansas City – 4.75

The Royals have fallen behind the Tigers in the AL Central, but will compete for weeks to come.

4. (9) Houston – 4.58

The Astros are the hottest team in baseball. Repeat. The Astros are the hottest team in baseball.

5. (6) New York Yankees – 4.30

A-Rod is back and hitting home runs, monopolizing the spotlight as this team wins.

6. (4) Detroit-  3.76
7. (17) Baltimore – 3.60
8. (9) Pittsburgh – 3.57
9. (8) New York Mets – 3.56
10. (7) Oakland – 3.56
11. (13) Chicago Cubs – 3.36
12. (16) Washington – 3.29
13. (5) San Diego – 3.24
14. (22) Miami – 3.23
15. (15)San Francisco – 3.20
16. (12) Tampa Bay – 3.12
17. (26) Cincinnati – 2.84
18. (14) Atlanta – 2.84
19. (19) Arizona – 2.75
20. (29) Minnesota – 2.71
21. (25) Seattle – 2.61
22. (10) Colorado – 2.57
23. (18) Toronto – 2.45
24. (20) Cleveland – 2.43
25. (23) Los Angeles Angels – 2.39
26. (28) Texas – 2.11
27. (24) Boston – 2.05
28. (30) Milwaukee – 1.87
29. (21) Chicago White Sox – 1.81
30. (27) Philadelphia – 1.72