The tentative eligible list includes all players on the 25-man roster or major league DL as of Aug. 31. Teams can select any 25 players from the eligible list, and it doesn't have to be the same 25 players for each round of the postseason. In addition to that, players not on the eligible list but who are in the organization as of Aug. 31 can replace players on the 60-day DL (pitcher for pitcher, position player for position player). Since the Cubs have Prior, Novoa, and Guzman on the 60-day, so they could add up to three pitchers not currently on the 25-man or DL. I believe Trachsel would qualify under this provision, as would pitchers currently in the minor league system (Gallagher, etc.).