TJ Barnes is back, playing with his crazy cats, T-Rex and Alaska, helping out in his parents' hardware store and goofing around with his best friend, Seymour.

When Seymour announces that he has signed them both up for a football team, TJ fears the worst. Neither of them is huge or mean or able to tackle, catch, throw, run or kick a ball down a field, but Seymour is determined to be a star. With the help of a stack of library books, TJ starts to understand the game but it takes more than a few books to figure out what’s wrong with his best friend.

TJ and the Sports Fanatic is the fourth of five books in the series.