By Andrew Perna 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 Thursday, July 5th games: The rankings from last week are in parenthesizes. 1. (2) New York Yankees - 4.18 2. (1) Texas Rangers - 4.15 3. (3) Washington Nationals - 4.10 4. (6) Cincinnati Reds - 3.80 5. (5) St. Louis Cardinals - 3.79 6. (4) Los Angeles Angels - 3.74 7. (T7) Los Angeles Dodgers - 3.62 8. (9) Boston Red Sox - 3.55 9. (11) Chicago White Sox - 3.51 10. (T7) San Francisco Giants - 3.50 T11. (12) Detroit Tigers - 3.44 -- (17) Pittsburgh Pirates - 3.44 13. (10) Arizona Diamondbacks - 3.41 14. (16) New York Mets - 3.34 15. (14) Atlanta Braves - 3.33 16. (T19) Oakland Athletics - 3.27 17. (15) Tampa Bay Rays - 3.16 18. (22) Toronto Blue Jays - 3.10 19. (13) Baltimore Orioles - 3.09 20. (T19) Milwaukee Brewers - 3.06 21. (18) Philadelphia Phillies - 3.04 22. (21) Kansas City Royals - 2.96 23. (T24) San Diego Padres - 2.85 24. (27) Cleveland Indians - 2.84 25. (23) Miami Marlins - 2.83 26. (26) Seattle Mariners - 2.50 27. (T24) Houston Astros - 2.44 28. (28) Colorado Rockies - 2.43 29. (29) Chicago Cubs - 2.41 30. (30) Minnesota Twins - 2.24