Official ITF Tennis Equipment & Ball Calibration Standards
Standard equipment specifications governed by ITF Appendix I (The Ball) and Appendix II (The Racket).
Verified against: ITF Technical Equipment GuidelinesLAST VERIFIED: 2026-08-01
STANDARD 01
ITF Type 2 Standard Pressurized Tennis Ball
Hollow two-piece vulcanized rubber core pressurized with internal gas and covered with woven Melton felt (wool and nylon).
| Mass / Weight | 56.0 – 59.4 g |
| Diameter | 6.54 – 6.86 cm (2.57 – 2.70 in) |
| Rebound Height (from 254 cm drop onto concrete) | 135 – 147 cm |
| Internal Pressure | 12 – 14 psi |
STANDARD 02
Tournament Regulation Tennis Racket
Graphite / carbon fiber composite frame with maximum dimensional limitations under ITF Appendix II.
| Max Frame Length | 73.7 cm (29.0 in) |
| Max Frame Width | 31.75 cm (12.5 in) |
| Max Hitting Surface Length | 39.4 cm (15.5 in) |
| String Pattern | Uniform crossed mesh pattern, single stringbed plane |