Grand Slam debutant Nagal took the first set (6-4) from the Swiss ace Federer, before the legend returned to his best and won the next three 6-1, 6-2, 6-4 to enter the second round in New York.

from Times of India https://timesofindia.indiatimes.com/sports/tennis/us-open-2019/valiant-sumit-nagal-gives-roger-federer-a-scare-before-going-down-at-us-open/articleshow/70852537.cms