Novak Djokovic added one more feather to his cap by winning another grueling battle in Doha on Thursday to continue his progress to Qatar Open semi-finals.

The world No 1 had to battle from a set down to beat Nikoloz Basilashvili and admitted that he still has “a gear or two left”. For the second day in a row, he required three sets to march forward in Doha as he won 4-6 6-3 6-4.

In a two-hour match, Djokovic lost his first service and never recovered the break as Basilashvili, the number 5 seed took charge of the first set.

However, Djokovic’s fortunes changed as he broke the Georgian in the fifth game and slowly took control over the match.

The Serb, with the history of tournament champion in Doha, remains still as the overwhelming favorite to win this time too and now has a 15-1 record overall in Doha.

“I feel like I have a gear or two up still”, said Djokovic.

He will play against Spain’s Roberto Bautista Agut in Friday’s semi-finals.