By Christopher Reina The Opsera is a statistic I created in order to objectively rank teams by how well they hit (OPS) and pitch (ERA). In order to determine a team's Opsera, I take their OPS, multiply that number by 10 to move the decimal point over one place to the right and then subtract the team's ERA from that number. At the All-Star break, three of the top four Opsera teams are unsurprisingly the Yankees, Rays and Red Sox, with the Cardinals being sandwiched between them. 1. New York Yankees: 4.06 2. St. Louis Cardinals: 4.05 3. Tampa Bay Rays: 3.86 4. Boston Red Sox: 3.84 5. San Francisco Giants: 3.82 6. Atlanta Braves: 3.77 7. Texas Rangers: 3.71 8. Colorado Rockies: 3.68 9. San Diego Padres: 3.66 10. Cincinnati Reds: 3.60 11. Minnesota Twins: 3.54 12. New York Mets: 3.49 13. Philadelphia Phillies: 3.45 14. Chicago White Sox: 3.43 15. Detroit Tigers: 3.39 16. Los Angeles Dodgers: 3.35 17. Chicago Cubs: 3.23 18. Oakland Athletics: 3.22 19. Florida Marlins: 3.22 20. Toronto Blue Jays: 3.21 21. Washington Nationals: 3.08 22. Milwaukee Brewers: 2.84 23. Kansas City Royals: 2.66 24. Los Angeles Angels: 2.66 25. Seattle Mariners: 2.64 26. Cleveland Indians: 2.39 27. Arizona Diamondbacks: 2.21 28. Baltimore Orioles: 2.06 29. Houston Astros: 2.00 30. Pittsburgh Pirates: 1.47 ? Chris Reina is the executive editor of RealGM. Follow him on Twitter at @CR_Reina.