A face of a tennis racket includes a plain weave structure including a plurality of longitudinal threads, a plurality of high-tension transverse threads 36, and a plurality of low-tension transverse threads 38. The tennis racket includes a spin facilitating zone 46. The spin facilitating zone 46 includes: (1) a first high-tension transverse thread 36; (2) a second high-tension transverse thread 36; and (3) an odd number of low-tension transverse threads 38 positioned between the first high-tension transverse thread 36 and the second high-tension transverse thread 36. The spin facilitating zone includes no other high-tension transverse thread 36 positioned between the first high-tension transverse thread 36 and the second high-tension transverse thread 36.

Structures with racket performance varied according to the configurations of cylindrical parts can be easily used. A grommet includes a cylindrical part which is mounted pierced through a through hole formed in a frame of a racket and through which a string passes. The string is extended in a tensioned state on the frame so as to form front and back faces as hitting faces. The cylindrical part includes a first formation section forming both sides of a central axis position of the cylindrical part and a second formation section rotationally shifted with reference to the central axis position by 90 degrees relative to the first formation section and forming both sides of the central axis position. One of the first and second formation sections is disposed on both sides in a front/back direction. The first and second formation sections each have a different rigidity.

Structures with racket performance varied according to the configurations of cylindrical parts can be easily used. A grommet includes a cylindrical part which is mounted pierced through a through hole formed in a frame of a racket and through which a string passes. The string is extended in a tensioned state on the frame so as to form front and back faces as hitting faces. The cylindrical part includes a first formation section forming both sides of a central axis position of the cylindrical part and a second formation section rotationally shifted with reference to the central axis position by 90 degrees relative to the first formation section and forming both sides of the central axis position. One of the first and second formation sections is disposed on both sides in a front/back direction. The first and second formation sections each have a different rigidity.

A racket frame includes a frame main body having a loop shape. The frame main body is provided with a plurality of holes, a plurality of main strings extend in an up-down direction and are arranged in a right-left direction and a plurality of cross strings extend in the right-left direction and are arranged in the up-down direction. Through a common hole, out of the plurality of holes, any one of the plurality of main strings and any one of the plurality of cross strings are inserted. A shape of an inner opening of the common hole on an inner peripheral surface of the frame main body is formed such that an opening dimension in a circumferential direction of the frame main body is larger than an opening dimension in a thickness direction of the frame main body.

A racket frame includes a frame main body having a loop shape. The frame main body is provided with a plurality of holes, a plurality of main strings extend in an up-down direction and are arranged in a right-left direction and a plurality of cross strings extend in the right-left direction and are arranged in the up-down direction. Through a common hole, out of the plurality of holes, any one of the plurality of main strings and any one of the plurality of cross strings are inserted. A shape of an inner opening of the common hole on an inner peripheral surface of the frame main body is formed such that an opening dimension in a circumferential direction of the frame main body is larger than an opening dimension in a thickness direction of the frame main body.