Due to the vaccine refusal, there have been few matches for world number one Djokovic during the spring.

He has not yet won a tournament.

In Belgrade, he played his fifth, sixth, seventh and eighth match of the year, all went to the arbitration set and it took its toll on the 34-year-old when he faced the Russian world eighth Andrej Rublev in the final.

- I got a bad feeling in my body at the end of the second set and throughout the third set I had the same feeling as I had in Monte Carlo (then lost in his first match against Alejandro Davidovich Fokina).

I do not know what the nausea was due to, says Djokovic according to Reuters and adds that it was not related to covid-19.

- It was a bit unfortunate that the besin ended in the third set, that I could not offer better resistance but can congratulate Andrej for another nice week, says Djokovic after Rublev took the third title of the season.

"Hopefully ready for five-seater in Paris"

- In any case, it was better that the bad feeling came in the fourth match and not in the first.

Things are progressing slowly but surely and Paris is the big goal and hopefully I will then be ready to play five-seater, says the Serb.

France have released restrictions on covid-19 and Djokovic is welcome to play the Grand Slam tournament at Roland Garros in Paris starting May 22, as well as Russian and Belarusian players.

However, Wimbledon has ported Russian and Belarusian players due to the Russian invasion, with Belarus as a transit country of soldiers, of Ukraine.