Former world No. 1 Ilie Nastase thinks Rafael Nadal has the edge over Roger Federer and Novak Djokovic in the GOAT debate since he now owns the all-time Grand Slam record. Nadal, 35, won a record 21st Grand Slam title after beating Daniil Medvedev in the Australian Open final. Djokovic didn’t get a chance to compete at the Australian Open after the Australian authorities canceled his visa. On the other side, Federer – who underwent a knee surgery in August – wasn’t ready to return to action at Melbourne Park. Djokovic and Federer are tied on the second place with 20 Grand Slams eachs. “It is clear that if the question is who has more great titles, the answer is Nadal,” Nastase told Marca, as quoted on Sportskeeda. “If we talk about the best ever there are other factors.Roger Federer has impressive talent…But there is no doubt that Raf …