Martina Navratilova
Winning ugly: In tennis, grunting works, but is it fair?

Listen up, tennis fans, it's quiz time. That explosive, guttural grunt issued by some of the world's best-known tennis players at the moment of contact with the ball is: a) a rude, pointless and annoying vogue that should be reined in by officials of the International Tennis Federation; b) a forceful but involuntary exhalation of air that signals fierce exertion; or c) a habit that has the effect of -- and is probably aimed at -- distracting and intimidating an opponent. If you picked a, you have a number of sympathizers on the Booster Shots staff. If you picked c, you have some new evidence to support your position. A pair of psychologists -- one from the University of...