The world number 1 was stunned by the big serving American in five sets.
Andy Murray lost 3-6, 6-4, 6-7 (4), 6-1, 6-1 to Sam Querrey, making the American the first man into the semi-finals, and the first American into the semi-finals of a Grand Slam tournament since Andy Roddick in 2009.
The 20-year old Latvian produced a sublime display of tennis as she fought back to win her first Grand Slam title at the French Open.
Ostapenko was unseeded and had never played in the final of a Grand Slam before, but she seemed at home as she broke Simona Halep’s serve in the very first game. However, some unforced errors began to creep into her game, and she eventually went down a set and 3-0.
Stan Wawrinka defeated Andy Murray, and Rafael Nadal defeated Dominic Thiem to set up a mouth-watering clash for the French Open title on Sunday.
Stan Wawrinka, the Swiss who won the title in 2015 against Novak Djokovic, faced a tough test in Britain’s Andy Murray as the two squared off in the semi-final at the French Open for the second year in a row.