Madison Keys lost nine consecutive games as she suffered a shock third-round exit at Wimbledon to Russian qualifier Evgeniya Rodina.
The American 10th seed lost 7-5 5-7 6-4 in two hours 10 minutes in her first meeting with the 29-year-old, who is ranked 120 in the world.
Keys, 23, had been 5-2 up in the first set only for her game to capitulate.
At 4-0 down in the second Keys brilliantly fought back to win the set before Rodina took a topsy-turvy third.
Keys had seemingly been cruising to the first set only for the momentum to dramatically swing back to the unheralded Russian.