Carlos Alcaraz had to fight his way out of a second-set slump on Sunday to escape with a 6-1, 2-5, 6-3 victory over Damir Dzumhur in his opening match at the ATP-WTA Cincinnati Open.

Novak Djokovic dispatched unheralded Damir Dzumhur of Bosnia-Herzegovina 6-1, 6-4,6-1 under floodlights at an empty Arthur Ashe Stadium in New York.

Roger Federer registered an effortless 6-1, 6-3, 6-3 win over Damir Dzumhur of Bosnia.

Damir Dzumhur from Sarajevo had two of the biggest wins in his career -- over former top tenners Mikhail Youzhny and Marcos Baghdatis -- to reach the third round in Paris. Roger Federer was too much for him to cope with on Friday as he lost 6-4, 6-3, 6-2.