Yes, it's hard to believe we're already in the thick of tryoutseason. All the comfort of knowing what the days ahead will look like is gone, replaced by that feeling in the pit of your stomach over all the uncertainty that will be dominating your thoughts for the next week or two.
Suddenly you're being judged and evaluated by a group of strangers who don't know your track record. You have to perform right here, right now if you want to be selected. It can be very nerve-wracking, which doesn't help your performance any.
Yet it can also be stressful for coaches. You can look at all the skills you want, but it doesn't answer how a player will perform in a game situation, what type of teammate she will be, how high maintenance her parents will be, what kind of game knowledge she has, etc.