WTA Rankings: Will Rybakina finish as year-end No 1 with Sabalenka, Pegula, Gauff ready to pounce?

Elena Rybakina has started life as the WTA world No 1 with a handy lead over the chasing pack, but she faces an uphill task to hold off Aryna Sabalenka, Jessica Pegula and Coco Gauff for the year-end No 1 ranking.