Just saw it myself...I typically enjoy the films that Josh Hartnett is in, though I don't often find him to be a very convincing actor. That being said, I thought Samuel L. Jackson did a great job, and the little kid in the film was AMAZING.
I agree with those of you who said it was good, not great...but definitely worth a look if you like this sort of film. I typically find "based on a true story" type stuff to be pretty interesting, particularly sports based films. I'm glad I saw it, for sure.