It's not exactly a huge shock when top September call-up candidates don't get called up on the first day of eligibility for expansion of the rosters.
It is a little shocking when their parent club makes other moves and chooses to leave some top prospects in the minor leagues, however. Not all clubs make a move on the first day of eligibility, though.
On Aug. 25, Bleacher Report's Jeffrey Beckman outlined the "30 Best Possible September Call-Ups." Several of the players he outlined are sure to make an appearance at some point this September, although there are likely to be a few snubs.
For the sake of this article, I excluded players whose clubs made no call-ups today. There are certainly some high-profile players who should be called up as soon as their clubs start to make some moves.
With that said, here are the top 13 players that will spend at least a few more days, if not longer, in the minors.