Rafa, Roger, Novak and Andy.The names roll off the tongue for the modern-day tennis fan as quickly as John, Paul, George and Ringo do for a Beatles geek.This fab four - or the Big Four as they are known - of the ATP Tour's post-millennium golden era are not seen together much these days,

It was already an emotional scene at the French Open on Sunday afternoon, when tennis legend Rafael Nadal was honored with a special farewell ceremony inside Roland-Garros, but a surprise appearance from three VIP guests really upped the ante.

An emotional Rafael Nadal, who retired in November, was honored with a farewell ceremony on Court Philippe-Chatrier, where he won a record 14 French Open championships.