Title favourite Iga Swiatek and Kazakhstan’s Elena Rybakina powered to swift victories on the opening day of the WTA Finals.
World number two Swiatek needed just 61 minutes to dispatch Australian Open champion Madison Keys 6-1, 6-2 in the Serena Williams Group.
Keys was plagued by errors, unable to cope with the relentless pace of the Pole.
Later, Rybakina delivered a serving masterclass against American Amanda Anisimova, winning 6-3, 6-1 in only 57 minutes.
The 2022 Wimbledon champion hit seven aces and won a remarkable 87% of points on her first serve to secure the statement win.
The top eight women’s players are competing for a record £12 million ($15.5 million) prize fund.
Action continues Sunday with the Stefanie Graf Group, featuring top seed Aryna Sabalenka and French Open champion Coco Gauff.
