Big racquets have bigger 'sweet spots' but are harder to control. A 'sweet spot' is the area in the middle of the strings which gives the cleanest hit. A mid-size racquet has a hitting area of about ...

A new string pattern and beam shape give the heaviest and most demanding of the Pure Drives much improved control.

The R-22 was the first tennis racquet with an isometric head shape, increasing the size of the cross-section and creating a larger sweet spot. In 1984, Navratilova used it to win Roland Garros ...