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 ...

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 ...

which marks the racquet’s sweet spot. Bottom Line: For aggressive, high-level baseliners who can move their opponents out of position to set up clean down-the-line and crosscourt winners.