Asked what he thought was the standout feature of Nagal, Federer said, 'I guess maybe how he handled the moment.'
Only Somdev Devvarman, Yuki Bhambri and Saketh Myneni have managed to win a set in a Grand Slam main draw before Nagal, in the last two decades
Nagal won the first set and managed to make Federer sweat for his win
22-year-old Sumit Nagal will face Swiss legend Roger Federer in the main draw of the 2019 US Open
The 22-year-old Indian has become only the fifth Indian player to feature in a Grand Slam singles main draw in this decade
Djokovic was only too happy to oblige, showing humanity in the humidity
Serbia's Sportski Zurnal reported that the 30-year-old could face up to 12 weeks on the sidelines
Swiss ace won his 3rd Grand Slam title, defeating the Serbian in the US Open final at the Flushing Meadows
The World No 2 seed beat Czech player Karolina Pliskova 6-3, 4-6, 6-4
Japanese star clinched a dramatic comeback in a shade under four hours against the reigning Wimbledon and Olympics winner
Swiss Wawrinka will play against Japan's Kei Nishikori, who made it into last four after stunning Olympic gold medallist Andy Murray
Mirza now remains India's only representative in the US Open after compatriot Rohan Bopanna crashed out of the mixed doubles
Serena recorded her 308th Grand Slam win, passing Roger Federer's all-time record in the Open Era with a 6-2,6-3 win
It took everything. I could not dream better than that, said Pouille after defeating 14 time grand slam champion Rafael Nadal
The pair of Sania Mirza and Ivan Dodig overcame American duo of Donald Young and Taylor Townsend 6-4, 6-4
Rafael Nadal also made the fourth round for the first time in three years in the US Open
Briton star Andy Murray, who had won Wimbledon before winning a gold medal at Rio Olympics is considered as a top favourite