World No. 1 Iga Swiatek thinks Rafael Nadal “has some superpowers” as she was absolutely impressed by what the Spaniard pulled off in the Australian Open final. Nadal, 35, was on the brink of losing the Australian Open final and he seemed to be done versus Daniil Medvedev. Medvedev was up by two sets, had a 3-2 lead in the third set and three consecutive break points on Nadal’s serve but the Spaniard saved those break points chances and won 2-6 6-7 (5) 6-4 6-4 7-5. Swiatek, who was beaten by Danielle Collins in the Australian …