The Williams sisters in their clay court primes were better clay courters than anyone today apart from Henin and possibly Clijsters and Kuznetsova. They are past their primes on the surface, especialy Venus, but it doesnt mean they were never excellent on clay. Venus won many tier 1 and tier 2 events on clay and it was a shame she didnt do better at the French, but still made a final there. She just destroyed Mary Pierce a few times on the surface, and Pierce is a French Open champion, 3 time French Open finalist, and one of the top clay courters of the 90s. Serena in her prime won a French Open then was cheated out of a possible 2nd one by a cheating Justine Henin Hardenne. When they were in their primes the clay court competition was alot tougher than today as well. If they were playing at their former levels on clay both would do even better vs todays weak clay court field. Heck Henin is only back to 60% of her old level at this point and she is still almost a lock to win the French this year.
