I read that Venus and Serena use Wilson Natural Gut (which is actually VS) at 65 lbs. and 67 lbs. respectively.
I also read the Mark Philippoussis used VS Team at 75 lbs.
Not sure how accurate this info is, but it comes from http://www.colinthestringer.com/pros-strings/
(6) Prince Original Graphite MP - Luxilon BB Alu Power Rough - 57 lbs.
Last edited by davidahenry; 11-18-2008 at 05:38 PM.