He was up against 20-time Grand Slam winner Federer in the opening round of the US Open and he impressed one and all with a spirited display.
Federer won the match 4-6, 6-1, 6-2, 6-4.
Nagal had become the first Indian to win a set against Federer.
Several top players to miss US Open 2020
Three-time US Open champion Novak Djokovic headlines the field with the likes of Federer and Rafael Nadal giving the tournament a miss.
While Federer has withdrawn from all competitions this year owing to a knee injury, defending champion Nadal pulled out due to the COVID-19 pandemic.
Stan Wawrinka, Nick Kyrgios, Fabio Fognini and Gael Monfils are the other top players to miss the tournament.
Coronavirus pandemic has hit the tennis world
The coronavirus pandemic has hit the tennis world hard. Professional tennis tours have been on a hiatus since March because of the pandemic. The Wimbledon 2020 event was canceled with the US Open being the second Slam of this season.