Although Novak Djokovic is not allowed to participate in the Australian Open after his expulsion from Australia, he will still be number one in the tennis world after the first Grand Slam tournament of the season.
The 34-year-old Serb cannot be ousted from the top spot by any other player, as the world tennis association ITF announced.
Should Alexander Zverev celebrate the first Grand Slam title of his career in Melbourne, he would improve to second place in the world rankings and outperform Russian Daniil Medvedev.
First place is not yet possible for the 24-year-old from Hamburg in Melbourne. Zverev has set himself a Grand Slam title and the leap to first place in the world rankings as goals for the season.