Dzumhur was also affected by the heat early in the match .
Was the first to call a trainer but he battled on and after a poor first set gained control to secure his first career victory against a world top - 10 player .
Dzumhur was also affected by the heat early in the match and was the first to call a trainer but he battled on and after a poor first set gained control to secure his first career victory against a world top - 10 player .