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, June 7th games: The rankings from last week are in parenthesizes. 1. (1) Texas Rangers - 4.26 2. (3) Los Angeles Dodgers - 4.13 3. (4) Washington Nationals - 4.05 4. (2) St. Louis Cardinals - 3.95 5. (7) New York Yankees - 3.92 6. (9) San Francisco Giants - 3.80 7. (8) Cincinnati Reds - 3.65 8. (5) Baltimore Orioles - 3.59 9. (6) Tampa Bay Rays - 3.54 10. (17) Los Angeles Angels - 3.47 11. (13) Chicago White Sox - 3.45 12. (16) Boston Red Sox - 3.43 13. (20) Arizona Diamondbacks - 3.40 T14. (10) Philadelphia Phillies - 3.29 -- (11) Toronto Blue Jays - 3.29 -- (14) Atlanta Braves - 3.29 17. (18) Miami Marlins - 3.22 18. (19) Detroit Tigers - 3.12 19. (23) Pittsburgh Pirates - 3.07 20. (28) New York Mets - 3.05 21. (22) Kansas City Royals - 2.99 22. (26) Milwaukee Brewers - 2.90 T23. (12) Houston Astros - 2.84 -- (25) Oakland Athletics - 2.84 25. (24) Seattle Mariners - 2.64 26. (15) Cleveland Indians - 2.63 T27. (21) San Diego Padres - 2.59 -- (27) Chicago Cubs - 2.59 29. (29) Colorado Rockies - 2.56 30. (30) Minnesota Twins - 1.95