American teenager Coco Gauff suffered a shock defeat by Katerina Siniakova within the second spherical on the Qatar Open.
World quantity three Gauff misplaced six video games in a row within the second set and was overwhelmed 6-2 6-4 by Czech Siniakova.
The 19-year-old Gauff was making her first look since an Australian Open semi-final loss to Aryna Sabalenka final month.
Regardless of being seeded second in Doha, Gauff couldn’t discover her traditional rhythm in opposition to 27-year-old Siniakova.
After dropping the opening set, final yr’s US Open champion regained her composure to race right into a 4-0 lead within the second set.
However Siniakova, who’s a seven-time Grand Slam champion in ladies’s doubles, hit again spectacularly to say one of many greatest victories of her singles profession.
Additionally on Tuesday, Naomi Osaka booked her place within the final 16 with a straight-set victory in opposition to Croatia’s Petra Martic.
4-time Grand Slam champion Osaka, who’s returning to the game after giving delivery to her first youngster in July, gained her second-round match 6-3 7-6 (11-9).
Unseeded Osaka, 26, missed an opportunity within the second set to take the match at 5-4 after which discovered herself 4-0 down at the beginning of the tie-break.
However the Japanese participant rallied to avoid wasting 4 set factors earlier than 33-year-old Martic double-faulted on match level.
Elsewhere within the second spherical, fourth seed Ons Jabeur was defeated 6-3 6-2 by Ukraine’s Lesia Tsurenko, whereas Australian Open runner-up Zheng Qinwen of China beat Poland’s Magda Linette 6-2 2-6 6-3.