Rafa Nadal's Australian Open preparations suffered a blow when the Spaniard suffered a shock defeat by Jordan Thompson in the Brisbane International quarter-finals on Friday.
Local favourite Thompson saved three match points before prevailing 5-7 7-6(6) 6-3 against Nadal, who was playing his first tournament after nearly a year out with a hip injury.
Having won the opener and leading 6-4 in the second-set tiebreak, Nadal was on the verge of victory before Thompson staged a remarkable comeback and went on to win in nearly three-and-half hours.
Thompson broke 37-year-old Nadal in the fourth game of the final set and was 4-1 up when the Spaniard left the court on a medical timeout.
Nadal, a 22-times Grand Slam champion, did return but could not stop Thompson, who faces Grigor Dimitrov in the semi-finals.
"To beat Rafa in Brisbane in quarter-finals, I think this is my first semi-finals on a hard court as well," Thompson said. "I could not be happier."
Second seed Dimitrov beat Rinky Hijikata 6-1 6-4.