I watched the official teaser trailer just now and thought it was nice, but not epic. It's a nice movie for teenagers to watch and maybe learn a little about the sport, that is... if everything is correct about the origins and the research is done properly of course!
Problem for me is that -other than me having seen it in american movies- the sport is not popular here in Europe at all, especially here in The Netherlands... so knowing a bit of background to the story and more importantly the sport itself makes for a better liking of the movie I guess.
