Novak Djokovic overcame problems with his right elbow and dizziness apparently caused by a spectator smoking cannabis to win his semifinal with Jeremy Chardy 6-4 6-4.

Djokovic advances to his ninth final in a row, and will face fellow former Roger's Cup champion and new world number two Andy Murray for the title.

Djokovic justifies position as favourite

The Serbian was the clear favourite for the match, having beaten Chardy all nine times they had played, each time without losing a set. In fact, before the match, Chardy averaged less than three games a set against the world number one.

Saturday's semifinal started in similar vein, with Chardy double faulting twice to open the match, going on to be broken in the first game. Despite improving during the match, he never had enough to trouble Djokovic, winning just ten points on the Serbian's serve.

A single break was therefore all Djokovic needed in both sets, and he served out the win without trouble in 79 minutes.

This was Chardy's first semifinal at Masters 1000 level, and he was perhaps weary with the effort getting to that stage, having had to save nine match points during his run to the last four. After the match he praised his opponent, saying "Novak, at the moment, is the best. Every time I play against him, I have a lot of problems.".

Djokovic overcomes on-court problems

Djokovic afterwards played down an issue with his right elbow which had required treatment mulitple times during the match. "It comes and goes" said the Serbian, "I try to bury the pain, it is part of what we do.".

It wasn't the only issue Djokovic had to face on court, having approached the umpire after the first set and complained "someone is smoking weed, I can smell it, I'm getting dizzy.". Later the world number one told the press "You wouldn't believe how bad it was. I hope he doesn't come back tomorrow.".

Murray next up for Serb

Djokovic remains unbeaten at Masters level since Shanghai last October, the semifinal marking his 30th win in a row at this level. He improves to 52-3 in 2015, and will attempt to add a seventh title - and fifth Masters title - to an already stellar season against Murray in the final.

Djokovic has beaten Murray the last eight times the two have played, and he was looking forward to the final after his win over Chardy:

"It's not over yet. The most important match is always the final.".