A's dealing with injuries to key players

Welcome to the C. Everett Koop edition of Baseball Insider, in which we take a peek into the trainer's room and assess the various aches, pains and other maladies that might be standing between your favorite team and a berth in postseason play.

Several other factors -- such as pitching, hitting and fielding -- are likely to enter the equation between now and October. But health will clearly play a role. Here's a look at the 12 postseason contenders (sorry, Washington Nationals) and where they stand in the rankings. The healthiest clubs are at the top, and the most banged-up at the bottom.

1. Cleveland Indians
The Indians' late-season run has been fueled in part by manager Eric Wedge's ability to field a healthy lineup. C.C. Sabathia, Cliff Lee, Jake Westbrook, Kevin Millwood and Scott Elarton have combined to make 147 of a possible 151 starts. The lineup is also fine with the exception of second baseman Ronnie Belliard, who missed four games with an abdominal strain before returning Tuesday night.