ATP

Official

Guillermo MAGO Coria (requires flash)
Roger Federer
Mardy Fish

Unofficial

100% Tompa - The best Thomas Enqvist site still running, run by Valérie
Blake Brothers Online - for James and Thomas Blakes, by Stomps and Teresa
Jan-Michael Gambill official site - Angel's site for Gambill, with his stamp of approval
Todd Martin Fan Page - The website for Todd Martin fans by the supreme Caroline
Roddick'n'Roll - An Andy site run by Anne, Beth, Caz, Caryn, Lauz and San
JanMike Tennis - A great site for Jan-Michael Gambill

WTA

Official

Kim Clijsters
Justine Henin-Hardenne

Unofficial

Monica Seles Site - Very complete and comprehensive site by Ronny and James