Doha, February 25

The remaining top seed at the Qatar Open, Agnieszka Radwanska, avoided the fate of many of the other top players in Doha and eased through to the final eight on Wednesday.

The No 3 seed won in straight sets 7-5, 6-1, against Romania’s Monica Niculescu, to restore some order to a tournament where many of the top players have crashed out in the opening rounds. The Pole overcame windy conditions and a tricky first set where her serve was twice broken, to make the quarter-finals. “Well, for sure, (that was) not an easy match. Very tricky opponent,” Radwanska told reporters.

Radwanska struck 31 winners and 15 unforced errors throughout the match. Asked if she was now the clear favourite to win having seen at least nine seeds lose in the past two days, including the Australian Open champion Angelique Kerber, No 2 seed Simona Halep and the defending champion Lucie Safarova, Radwanska said the tournament was still very open. “Well, as we know, every tournament has these kind of score surprises and some of the top players are out in the earlier rounds,” she said.

Double Wimbledon champion Petra Kvitova, the No 5 seed, was another who exited the tournament on Wednesday. The Czech lost to Latvia’s Jelena Ostapenko in three sets, 7-5, 2-6, 1-6. Ostapenko is ranked 78 places behind world No 8, Kvitova. “It was really great, and, yeah, I’m really happy,” said Ostapenko.

Also out is Caroline Wozniacki. The No 13 seed lost in three sets to the impressive Elena Vesnina 5-7, 7-5, 3-6. Vesnina had beaten Halep in the previous round and is now one of at least four unseeded players through to the last eight. Another is Zheng Saisai, the Chinese player who surprisingly knocked out Kerber in the previous round. On Wednesday, she claimed another high-profile scalp beating Eugenie Bouchard in straight sets. Zheng won 7-6 (7/1), 6-1 to march into the final eight. The world-ranked No 73 won in an hour and 35 minutes against Bouchard.