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. Below are the rankings through the Wednesday, August 8th games: The rankings from last week are in parenthesizes. 1. (1) New York Yankees - 4.17 2. (3) Washington Nationals - 4.05 3. (4) St. Louis Cardinals - 4.00 4. (2) Cincinnati Reds - 3.97 5. (5) Texas Rangers - 3.89 6. (6) Arizona Diamondbacks - 3.65 7. (7) Los Angeles Angels - 3.64 8. (10) Detroit Tigers - 3.61 9. (9) Atlanta Braves - 3.57 10. (8) Pittsburgh Pirates - 3.55 11. (14) San Francisco Giants - 3.51 12. (T12) Chicago White Sox - 3.44 13. (T12) Los Angeles Dodgers - 3.43 14. (11) Oakland Athletics - 3.42 15. (15) Tampa Bay Rays - 3.39 16. (16) Boston Red Sox - 3.30 17. (17) Milwaukee Brewers - 3.19 18. (21) Baltimore Orioles - 3.08 19. (19) Philadelphia Phillies - 3.06 20. (18) New York Mets - 3.01 21. (T22) San Diego Padres - 2.97 22. (20) Toronto Blue Jays - 2.93 23. (25) Miami Marlins - 2.83 24. (24) Kansas City Royals - 2.82 25. (T22) Seattle Mariners - 2.72 26. (28) Minnesota Twins - 2.58 27. (26) Cleveland Indians - 2.49 28. (27) Chicago Cubs - 2.41 29. (29) Colorado Rockies - 2.26 30. (30) Houston Astros - 2.07