Associations:
- Desborough Cup – www.desborough-cup.co.uk
- ISTA – https://www.istachamps.org/
- Vets Tennis of GB – http://www.vetstennisgb.org
Grand Slams:
- Wimbledon – http://www.wimbledon.com
- Australian Open – www.australianopen.com
- French Open – http://www.rolandgarros.com
- US Open – www.usopen.org
Organisations:
- ATP – http://www.atpworldtour.com/
- WTA – http://www.wtatennis.com/
- ITF – http://www.itftennis.com/