World quantity three Coco Gauff misplaced in 73 minutes to Marta Kostyuk within the second spherical of the Qatar Open.
The Ukrainian, the world quantity 21, fought again from 3-1 down within the second set to wrap up a 6-2 7-5 victory on the WTA 1,000 occasion in Doha.
It’s a second successive defeat for Gauff, who obtained a bye within the first spherical and was taking part in for the primary time since she misplaced to Paula Badosa within the quarter-finals of the Australian Open final month.
The 2023 US Open champion was undone by seven double faults and 39 unforced errors whereas she managed simply eight winners.
Gauff had gained her final 17 matches towards opponents ranked outdoors the highest 20 earlier than dealing with Kostyuk.
The 22-year-old will now face the winner of an all-Polish tie between Magda Linette and Magdalena Frech.
Elsewhere, former Wimbledon champion Elena Rybakina claimed a 6-2 6-4 win towards American Peyton Stearns, whereas Jasmine Paolini – final 12 months’s Wimbledon and French Open runner-up – defeated Caroline Garcia 6-3 6-4.
Linda Noskova gained 6-2 6-3 towards Kazakhstan’s Yulia Putintseva to arrange a last-16 assembly with three-time defending champion Iga Swiatek.