StefanosTsitsipas said he was unable to find any positives from his straight-sets thrashing at the hands of Rafael Nadal in their Australian Open semi-final. World No 2 Nadal destroyed the 20-year-old rising talent 6-2, 6-4, 6-0. The Greek No 14 seed had knocked six-times championRogerFedererout in the fourth round. Nadal dismantles Tsitsipas to reach Australian Open final