Stumped! offers definitive answers to sports-related conundrums including:

* Which country is the best at sport?

* Who would win a fight between Muhammad Ali and Bruce Lee?

* In motor racing, is the car or the driver more important?

* Are English footballers really thicker than foreign players?

Drawing on studies by historians, statisticians, scientists, doctors and philosophers - and bringing a healthy amount of common sense to bear - Nicholas Hobbes addresses the whys, whats and hows so you don't have to.

Stumped: it's not the questions but the answers that count.