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. After the first week of play, the top five slots in the Opsera rankings are held by the division leaders, with the Cardinals being the sixth (ranked 11th) in the as bad as advertised NL Central. Five of the six teams in the NL Central have negative run differentials while four of five teams in the NL West are on the plus side. 1. Philadelphia Phillies: 6.44 2. Toronto Blue Jays: 5.41 3. San Francisco Giants: 4.79 4. Detroit Tigers: 4.74 5. Oakland Athletics: 4.64 6. Colorado Rockies: 4.64 7. Atlanta Braves: 4.56 8. Minnesota Twins: 4.55 9. Arizona Diamondbacks: 4.45 10. Texas Rangers: 4.22 11. St. Louis Cardinals: 4.20 12. New York Yankees: 4.14 13. Boston Red Sox: 4.00 14. New York Mets: 3.93 15. Chicago White Sox: 3.72 16. Los Angeles Dodgers: 2.89 17. Baltimore Orioles: 2.75 18. Florida Marlins: 2.47 19. Milwaukee Brewers: 2.45 20. Tampa Bay Rays: 2.31 21. San Diego Padres: 2.21 22. Cincinnati Reds: 2.17 23. Cleveland Indians: 1.80 24. Kansas City Royals: 1.72 25. Los Angeles Angels: 1.64 26. Chicago Cubs: 1.36 27. Seattle Mariners: 1.33 28. Washington Nationals: 0.94 29. Pittsburgh Pirates: 0.34 30. Houston Astros: -0.52