Djokovic is back on top - Updated tennis rankings

After the first Grand Slam of the year, there are some changes in the world rankings. For example, Novak Djokovic returns to top spot.

Novak Djokovic to return to top of tennis rankings after current

Novak Djokovic through to Australian Open final and on course to

Djokovic back at top of ATP rankings; Sabalenka No. 2 in WTA