World number three Grigor Dimitrov got his Australian Open back on track Friday (Jan 19) with a gutsy win on another searing day, as organisers defended the tournament heat policy.
Grigor Dimitrov came through a tough match against 30th seed Andrey Rublev to progress to the Australian Open fourth round. The Bulgarian won 6-3 4-6 6-4 6-4 in high temperatures on Rod Laver Arena.
Third seed Dimitrov struggled at times but won a second consecutive match lasting over three hours, following his five-set win over Mackenzie McDonald.
The 2017 semi-finalist will play either Jo-Wilfried Tsonga or Nick Kygrios in the last 16.
