Wimbledon champion Novak Djokovic suffered in sweltering US Open conditions yesterday but battled through to the second round with a 6-3, 3-6, 6-4, 6-0 victory over Hungarian Marton Fucsovics.

Djokovic, playing his first match on Arthur Ashe Stadium since falling to Stan Wawrinka in the 2016 final, received a brutal welcome back to Flushing Meadows as soaring temperatures and high humidity prompted organizers to offer the men a 10-minute mid-match heat break for the first time ever.