It's my book, soooo... I meannn... obviously 5 stars.
But being honest, I believe that it's actually worth such a rating.
If you like sports, then hop on for the ride, I guarantee you won't be disappointed, and well, there's a bit of romance as well if you want to see it.
Also, this book doesn't have anything supernatural apart from the time regression/displacement at the beginning of the story, so if you fancy something like that, you could hop on the ride too.
All in all, I think, it's a book you'll enjoy reading, so read, add it to your library, vote powerstones, leave a review and we'll all be happy.
... If not, I will find you, and force it down your... (Complete that sentence as you will)