Tomas Berdych and Caroline Wozniacki both lost their way in Beijing's choking smog as they exited the haze-hit China Open with tough defeats on Wednesday. The Czech world number five never hit his stride against Uruguay's 37th-ranked Pablo Cuevas as he was dumped out 6-4, 6-4 to become the rollercoaster tournament's latest upset.
Later Wozniacki was brutally disposed of by a grimly determined Angelique Kerber 6-2, 6-3 as her hopes of reaching the year-ending WTA Finals took a hit. Andrea Petkovic was also bundled out by Sara Errani 3-6, 6-3, 6-2, compounding a tough season which has included food poisoning, injury and a first-round defeat last week in Wuhan.