David Ferrer was dumped out of the Barcelona Open by Russian qualifier Dmitry Tursunov.
Tursunov recently hit the headlines for all the wrong reasons when he was stunned by Britain's James Ward in the Davis Cup.
But he pulled off the biggest win of his career by upsetting the world No 4 7-5 3-6 6-1 in the second round.
Four-time finalist, Ferrer, pulled out of the Monte Carlo Masters event last week with an unspecified leg injury which he picked up when losing in the Miami final to Andy Murray last month.
And he looked far from his best in blustery conditions, firing long to hand the Russian - ranked 66 in the world - victory.
Tursunov hit just five aces in the match, but struck 30 winners to Ferrer's 15 and he now faces a third round match with Brazilian 16th seed Thomaz Bellucci.