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. In the first rankings since the middle of June, Boston has climbed all the way up to the third slot. 1. St. Louis Cardinals: 4.20
2. New York Yankees: 4.00
3. Boston Red Sox: 3.96
4. San Francisco Giants: 3.85
5. Texas Rangers: 3.85
6. Tampa Bay Rays: 3.82
7. Minnesota Twins: 3.70
8. Colorado Rockies: 3.69
9. San Diego Padres: 3.69
10. Atlanta Braves: 3.60
11. New York Mets: 3.50
12. Philadelphia Phillies: 3.47
13. Cincinnati Reds: 3.39
14. Chicago Cubs: 3.32
15. Los Angeles Dodgers: 3.30
16 .Florida Marlins: 3.29
17. Toronto Blue Jays: 3.28
18. Detroit Tigers: 3.26
19. Oakland Athletics: 3.15
20. Washington Nationals: 3.13
21. Chicago White Sox: 3.03
22. Milwaukee Brewers: 2.89
23. Los Angeles Angels: 2.89
24. Kansas City Royals: 2.76
25. Seattle Mariners: 2.67
26. Cleveland Indians: 2.26
27. Arizona Diamondbacks: 2.14
28. Baltimore Orioles: 1.87
29. Houston Astros: 1.67
30. Pittsburgh Pirates: 1.39
Chris Reina is the executive editor of RealGM. Follow him on Twitter at @CR_Reina.