RIYADH : Aryna Sabalenka can finish a spectacular season by securing the year-end world number one ranking, while Iga Swiatek will eye a late surge to reclaim top spot as the duo take centre stage at the WTA Finals in Saudi Arabia from Saturday.Sabalenka retained the Australian Open title in January, lift

It was all smiles between Aryna Sabalenka and Iga Swiatek in Riyadh as the world No1 and No2 popped balls back and forth over the net in a last practice before the start of the WTA Finals.