FanHouse Tony Gwynn Jr

MLB Power Rankings: Where MLB FanHouse's editors, writers and bloggers team up to break down the who's who and the what's what in the baseball world.

Well, I'll tell you one thing: baseball ain't boring, folks. At least if you're in the middle class anyway; the upper crust is (somewhat) starting to establish itself across MLB's ranks and the bottom portion of the league is certainly holding steady. But in the middle, well, goodness. We have a lot of would-be title contenders. How's your semi-crappy team faring in the all-important MLB FanHouse Power Rankings this week? Find out after the jump.

Every Sunday, MLB FanHouse empties out its notebook in Baseball Brunch.

A week ago Sunday night, Mariano Rivera earned his 500th save. Which should make us realize a few things about closers:

• The truly great ones are the those who can sustain it for a long time. Getting 40 saves a year for 12 years would still leave one short of 500.

• Even getting to the second tier isn't easy. Only 18 players have had as many as six 30-save seasons: Rivera, Trevor Hoffman, Lee Smith, Billy Wagner, Troy Percival, John Wetteland, Dennis Eckersley, John Franco, Jason Isringhausen, Robb Nen, Jeff Reardon, Todd Jones, Jose Mesa, Roberto Hernandez, Randy Myers, Rick Aguilera, Tom Henke and Todd Worrell.

In other words, the shelf life for a typical closer is a short one. They can burst onto the scene – and flame out quickly (right, Mr. Gagne?)

• But it also means that teams can find short-term solutions for the ninth inning any number of ways.