Rafa Nadal and Novak Djokovic set up a blockbuster semifinal clash at the Mutua Madrid Open! More from Ashley Ndebele:

MADRID, Spain -- Rafael Nadal fended off David Goffin in straight sets in the quarterfinals of Mutual Madrid Open on Friday.The four-time champion too the match 7-6(3), 6-2.Up next for Nadal is long-time rival Novak Djokovic, who had a walkover after Kei N