Daria Gavrilova recovered from a match point down to dump Camila Giorgi 3-6 7-6(6) 6-3 in two-and-a-half hours on Court No4.
And Australian-based Russian is not making her way through the draw easy.
The 21-year-old blonde bombshell started off the Aegon International by being the biggest villain in the tournament by thrashing former British #1 Laura Robson during Qualifying on Saturday.
Gavrilova had the sour taste of defeat herself, falling before the main draw to New Zealander Marina Erakovic on Sunday.
Yet on Monday she bypassed the 1st Round and found herself propelled to the 2nd Round as the ‘Lucky Loser’ replacement for top seed Petra Kvitova, who announced her second withdrawal in as many seasons.
Staring defeat firmly in the face, as had compatriot Sara Errani who beat the odds on the parallel Court before overcoming Czech Barbora Strycova, against world #32 Giorgi in the second set tie-break seemed to jolt Gavrilova.
And from 5-6 down the Russian collected the next three points to set up a grand finale in the basking sunshine.
The first set, won by Giorgi who was in control throughout, was soon forgotten and Gavrilova should have done better than let the 3-0 lead slip through her fingers and be pegged back for a tense tie-break.
Gavrilova seemed to have the measure of her opponent, whose blistering cross-court shots were winning the points, and sped into a 3-1 lead only to concede the next four points much to the vocal delight of Giorgi’s enthusiastic father watching courtside.
Giorgi edged 6-5 ahead to earn a deserved match point, only for Gavrilova to capture three points on the bounce and square the contest.
With Giorgi fuming at fluffing her chance, especially after she had notched her maiden grass court WTA Tour title in the Netherlands this month, she lost concentration to drop her service game and again to trail 5-1.
She bounced back with two games to keep Gavrilova under pressure, only to fall on her own service game after saving one match point.
Each day at Devonshire Park has been full of surprises for Gavrilova so far, it will certainly be interesting to see what else lies in store for the Russian on her rollercoaster ride in Eastbourne.
There was a surprise for seeded Spaniard Flavia Pennetta, beaten by Russian veteran Svetlana US superstar Serena Williams at the 2014 French Open – who saw off Slovenia’s Polona 5-7 6-3 6-0.
And Coco Vandeweghe joined American compatriot Sloane Stephens in the last 16 after a 7-5 2-6 6-1 success over Romanian Monica Niculescu.