Doubles partners Dann and Brian Battistone are double trouble in more ways than one. Not only are they brothers, but they also both play with two-handled tennis racquets. Equipped with forked handles, these swatters were designed with fitness in mind, to work both sides of the body equally. But the Battistones have found that the racquets work to their advantage come game time.
The rather bizarre racquets enable players to hit two-handed forehands as well as the more common two-handed backhand for extra power. The Battistones frequently switch grips while serving and hit open-stance forehands from both sides, though they admit that the racquet mostly appeals to kids and novices. Personally, I can't quite understand what advantage it would afford to intermediate or advanced players, but I guess it works for these guys.
Still don't quite get how it works? I've found a video that explains it, so to see it, read more.