Ever wonder whether Tiger Woods in his prime would have beaten Bobby Jones, Ben Hogan, or Jack Nicklaus in their primes? And could any of them have beaten Babe Zaharias? Obviously, if Bobby Jones were returned to life and health and then given his old hickory-shafted mashie, persimmon-headed driver, and rubber-core ball in a match against Jordan Spieth, the outcome would be foreordained. But what if the impact of the training, equipment, courses,...