This is a list of the closers in the National League and their back-ups. In NL-only leagues every player on this list should be drafted, and, in auction leagues, all the back-ups can be safely bid into the low double-digits. After all the value of a closer is between $20 and $30. if his back-up has a 50% chance of getting the job, then his expected value would be 50% of the closer's salary, no?
| Team | Closer | Back-up |
| Mets | Billy Wagner | TBD |
| Phillies | Tom Gordon | TBD |
| Marlins | TBD | TBD |
| Braves | Bob Wickman | Rafael Soriano |
| Nationals | Chad Cordero | TBD |
| Cardinals | Jason Isringhausen | Braden Looper |
| Astros | Brad Lidge | Dan Wheeler |
| Brewers | Francisco Cordero | Derek Turnbow |
| Cubs | Ryan Dempster | Kerry Wood |
| Pirates | Mike Gonzalez | Salomon Torres |
| Reds | David Weathers | Everyone Else |
| Padres | Trevor Hoffman | Scott Linebrink |
| Dodgers | Takashi Saito | Jonathan Broxton |
| Rockies | Brian Fuentes | TBD |
| D'backs | Jose Valverde | Jorge Julio |
| Giants | Armando Benitez | TBD |