The women's ASB Classic has been hit by another withdrawal, with Svetlana Kuznetsova pulling out on Monday due to a viral illness.
The Russian was due to play Serena Williams on Tuesday, in a highly anticipated match-up between two former Grand Slam champions.
But the former world No 2 advised tournament organisers on Monday afternoon that she wouldn't be able to take the court after failing to recover from the bug.
Her absence follows the exit of former French Open champion Jelena Ostapenko, who officially withdrew on Sunday night, due to "personal reasons."
And 2019 ASB Classic runner up Bianca Andreescu was another casualty last month, due to injury.