On Tuesday, Federer protected his home court and defeated Nadal, 6-4, 3-6, 6-3, in the first of two "Match For Africa" contests.
The two were tied at 3-3 in the third set before Federer ran away with the match. The crowd sent both players off to a rousing ovation as they prepare to finish the doubleheader on Wednesday.
"This is a special match to me that I'll remember forever," Federer said in an on-court interview after the match.
The top-ranked Nadal spoke jovially following Federer, as well. Like Federer, the Spaniard stressed that the importance of the event was the cause they are playing for. "The important thing is the money for his (Federer) foundation ... for very good causes ... for the kids ... for the people that need help."
Nadal flew into Zurich on Tuesday morning to play on Federer's turf. The duel benefited Federer's charity that funds sports and education programs in Africa. The two will board a private plane and fly over to Nadal's home and conclude the series on Wednesday in a match that will benefit Nadal's charity.