Ekaterina Alexandrova has stepped in to substitute for Madison Keys after Andreeva, currently ranked as the ninth-ranked player, chose not to sign in due to lacking fitness to compete today, according to the WTA.
Recent coverage have emphasized concerns about how competitors are being let down by the tournament organizers.
Welcome to another day at the Women's Tennis Finals. Although all contests offer thrilling action, the primary attraction showcases Iga Swiatek facing off with Amanda Anisimova.
Their previous encounter at the Wimbledon Championships earlier this season proved extremely lopsided, with Swiatek achieving a decisive 6-0, 6-0 victory. Nevertheless, the American player delivered a remarkable comeback just weeks later, overcoming Swiatek in straight sets during the US Open quarter-finals.
This crucial encounter marks the third chapter of their ongoing battle, with the winner advancing to the semi-finals in Riyadh.
Before that contest, Elena Rybakina will face Alexandrova instead of Madison Keys. The American player pulled out due to health issues in what constitutes a dead rubber, allowing the tenth-ranked player to participate. The Kazakh star aims to maintain her perfect streak, having already beaten both Swiatek and the American contender to secure her semi-final position.