The Opsera is a statistic I created in order to rank teams by how well they hit (OPS) and pitch (ERA). In order to determine a team's Opsera, I take their OPS, move the decimal point over one place to the right and then subtract the team's ERA from that number. * Previous week's ranking in parenthesis. 1. Los Angeles Dodgers 4.13 (1st) The Dodgers got only 14 at bats from Manny Ramirez during the month of May, but got excellent months from Juen Pierre, Casey Blake, Russell Martin and even Juan Castro. 2. New York Mets 3.94 (3rd) The Mets had a 3.34 ERA during the month of May, best in all of baseball as they got contributions from starters beyond just Johan Santana. 3. St. Louis Cardinals: 3.90 (5th) Albert Pujols has an OPS of 1.146 and number two on that list for St. Louis is Ryan Ludwick with a mark of .821. 4. Detroit Tigers: 3.74 (4th) Placido Polanco's OPS peaked in 2007 with a mark of .846, but it has dropped to .767 and .657 this season. 5. Texas Rangers: 3.74 (7th) The Rangers have a .888 OPS at home and .741 on the road. while their ERA splits (4.50/4.40) are far more proportional. 6. Boston Red Sox: 3.67 (6th) Justin Masterson has the lowest ERA amongst Boston starters with a mark of 4.25. In 2006, the last time the Red Sox missed the playoffs, Tim Wakefield was the low full time starter with an ERA of 4.63. 7. Toronto Blue Jays: 3.63 (2nd) The Jays were outscored 53-23 during their nine-game losing streak. 8. Milwaukee Brewers: 3.57 (8th) Yovani Gallardo has a 3.18 ERA and 9.00 K/9 rate. 9. Tampa Bay Rays: 3.47 (9th) With Andy Sonnanstine and Scott Kazmir struggling, not having Edwin Jackson and his 2.30 ERA makes Matt Joyce troublesome, though the left fielder came back on Sunday with a homer. 10. New York Yankees: 3.47 (12th) CC Sabathia put up a 2.56 ERA during the month of May and Chien-Ming Wang even had a 2.25 mark in his eight innings of work. 11. Cincinnati Reds: 3.35 (10th) Bronson Arroyo has a 5.12 ERA, but he has put three consecutive excellent starts in a row, with five earned runs in 24 innings. 12. Atlanta Braves: 3.20 (13th) After sweeping the Blue Jays, the Braves lost five of six on a road trip to San Francisco and Arizona. 13. Kansas City Royals: 3.18 (11th) While the Sports Illustrated jinx took Cleveland down, Zack Greinke still has a 1.10 ERA overall after posting a 1.57 mark in May. 14. Chicago Cubs: 3.12 (23rd) The Cubs offense has lacked the punch it had last season, with a mark of .740 this season compared to .797 last year. 15. Philadelphia Phillies: 3.09 (16th) Pitching unquestionably has been a problem for the Phillies this season, with a 5.02 team ERA and marks of 7.71 for Brad Lidge and 5.21 for Cole Hamels. 16. San Francisco Giants: 3.04 (19th) The Giants hit for an OPS of .755 in May, which puts them 11th in baseball for the month. 17. Pittsburgh Pirates: 3.01 (14th) Freddy Sanchez is slugging .508, up dramatically from his .371 in 2008. 18. Minnesota Twins: 2.99 (15th) The Twins had an .821 OPS (2nd overall) during the month of May, compared to .715 in April. Joe Mauer largely contributed to that with a 1.338 OPS for the month after sitting out the entire month of April. 19. Seattle Mariners: 2.97 (20th) Russell Branyan continues his very good 2009 at the age of 33 with an OPS of 1.027. 20. Chicago White Sox: 2.91 (25th) Since some inconsistency due to injuries with Oakland, Dye has been remarkably consistent and almost universally underappreciated. He is 25th in OPS since 2005 when he joined the White Sox, ahead of Magglio Oronez and Carlos Lee, two players he essentially replaced in the lineup. 21. San Diego Padres: 2.84 (22nd) Adrian Gonzalez has a 9.1 AB/HR rate, a significant improvement from his career mark of 18.8. 22. Houston Astros: 2.82 (17th) Lance Berkman is hitting for an OPS of just .693 from the right side of the plate. 23. Los Angeles Angels: 2.75 (18th) While John Lackey and Ervin Santana have been hurt and largely ineffective in their starts, Jered Weaver has a 2.36 ERA and Joe Saunders has a mark of 3.26. 24. Colorado Rockies: 2.68 (21st) Brad Hawpe has a 1.041 OPS this season, which is more 2007 than 2008 for the right fielder. 25. Arizona Diamondbacks: 2.60 (24th) Mark Reynolds slugged .458 in 2008 and has seen that number climb to .546 in 2009 with a homer rate of 14.1 AB/HR. 26. Baltimore Orioles: 2.50 (30th) Adam Jones continues to mash, with a 1.005 OPS overall and seven homers in May. 27. Cleveland Indians: 2.46 (28th) Cliff Lee was 1-3 in May, but still had a 2.57 ERA as a victim of bad run support. 28. Florida Marlins: 2.37 (29th) Emilio Bonifacio had a 1.167 OPS on April 14th, with 11 runs in his first seven games and 16 runs in the 41 games since. 29. Oakland Athletics: 2.19 (26th) Matt Holliday found his stride in green and gold at least a little bit in May, with an OPS of .872. 30. Washington Nationals: 2.08 (27th) The Mets and Phillies swept the Nationals in consecutive series, as the NL East lions fed off its resident lamb.