The win means that Djokovic, who turns 38 in May, becomes the oldest player ever on the men's side to play a semifinal in a Masters 1,000 tournament.
I'm clearly playing the best tennis I've played in a while. It's fantastic to experience tournaments like this and perform at this level, he said in his victory interview.
The Serb – currently ranked fifth in the world – took the first set fairly easily after breaking Korda in his fourth serve game. The second set was significantly harder when the American could break and go up 2–0. But when he got the chance, Djokovic, who is considered by many to have the best return game in the history of the sport, managed to break back and then win in a tiebreak.
Djokovic, who has, among other things, 24 Grand Slam trophies and an Olympic Games gold medal to boast of, is chasing his 100th singles title. In the semifinal, he will face Grigor Dimitrov from Bulgaria.