Angelique Kerber has crashed out of the Dubai Duty Free Tennis Championships with a last-16 defeat to Hsieh Su-wei.
After winning the first set 7-5, the Wimbledon champion went down 6-4 in the second before losing the decider to love.
Another one of the current Grand Slam champions is through however, as French Open winner Simona Halep secured a 6-3, 7-5 win over Lesia Tsurenko.
The former world number one is joined in the last-eight by two-time Grand Slam winner Petra Kvitová, who overcame Jennifer Brady 7-5, 1-6, 6-3.
Kvitová will now face 20-year-old Viktória Kužmová, who beat Sofia Kenin in three sets.

Mexico have history, pressure hosting South Africa in World Cup opener
Bangladesh stun Australia to claim maiden ODI series win
Wimbledon announces record 20% rise in prize money
United States' Tharp breaks 110m hurdles world record
Knicks cap greatest-ever Finals comeback with OG Anunoby's tip-in
