Aryna Sabalenka and Iga Swiatek are set to clash for the year-end world No.1 ranking at the WTA Finals in Riyadh, starting Saturday. Sabalenka, who regained the top spot after a series of victories including the Australian Open and US Open, is determined to finish the year as the world number one, having previously lost the title in the closing weeks last season. Swiatek, a five-time Grand Slam champion, aims to reclaim her position despite recent fatigue that led her to skip the Asian swing of tournaments. Both players have been the only ones to hold the No.1 ranking since April 2022, and they will compete for a share of the $15 million prize pool and crucial ranking points. Sabalenka needs to win three matches or reach the final to secure her title, while Swiatek must defend her WTA Finals title to have any shot at overtaking Sabalenka. The rivalry has intensified as both players focus on their performance in the tournament, acknowledging each other's skills and competitive spirits.