I've gotten pops during the season.
I only track my team at training updates, so I don't know if experience pops occur during the training update or after individual games. I would tend to think that they occur after games, just like in HT.
edit: by "pops", I mean that a few of my players have each gained a level of experience. I haven't had anyone pop two levels yet.
Edited 10/20/2007 2:50:41 AM by dhoff