Seven-time singles Grand Slam champion Venus Williams crashed out of the Chicago Ladies’s Open within the first spherical after being handed a wildcard.
It comes after her world rating dropped to 147, her lowest since 1997.
The oldest individual within the draw at 41, former world primary Williams misplaced 6-2 6-3 to Taiwan’s Hsieh Su-wei.
Elsewhere on the WTA 250 match, Nice Britain’s Heather Watson retired harm whereas 6-2 1-0 down in opposition to Romania’s Ana Bogdan.
On the Cleveland Championships, GB’s Tara Moore was crushed 6-4 7-5 by Linda Fruhvirtova within the first spherical.
US Open qualifying begins on Tuesday, with seven British gamers hoping to hitch Johanna Konta, Watson, Dan Evans, Cameron Norrie and Andy Murray in the principle draw.
Williams has been awarded a wildcard for the Grand Slam – at which she received the singles title in 2000 and 2001.
The US Open takes place from 30 August-12 September.