Roger Federer overcame a brief scare to beat Indian qualifier Sumit Nagal in his first-round match at the US Open.
The 38-year-old Swiss, who is bidding for a record sixth title in New York, lost the first set before recovering to win 4-6 6-1 6-2 6-4.
Earlier on Monday, world number one Novak Djokovic progressed with a straight-sets victory over Spaniard Roberto Carballes Baena.
The Serb kicked off the defence of his title with a 6-4 6-1 6-4 win. Read more