A win would have clinched a slot in the eight-man, season-ending tournament for Davydenko, who came into Paris in seventh place in the standings.

Soderling, meanwhile, was one of four other players still in the hunt for the two remaining places in London from November 22-29.

A break of serve in the fourth game was enough to hand the first set to Soderling, who enjoyed the best performance of his career to date the last time he was in Paris, reaching the French Open final in June.

Davydenko, who won his third Masters title in Shanghai last month, was given some pills to swallow by a doctor, and that seemed to work wonders as he jumped out into a decisive 3-0 lead in the second.

The deciding set was a tense affair with serves on top until the 10^th game when Davydenko hit a backhand wide to set up match point and then drifted another backhand long to send Soderling into the quarter-finals.

The Swede though will still have to at least reach the final to have any chance of making it through to London.

In third round action later Thursday will be in-form third seed Novak Djokovic of Serbia who takes on French veteran Arnaud Clement and fourth seed Andy Murray of Britain who goes up against wily Czech Radek Stepanek.

Second seed Rafael Nadal, who saved five match points on Wednesday to get past fellow Spaniard Nicolas Almagro, has another countryman standing in his way in the shape of Tommy Robredo.

Top seed Roger Federer has already departed, dropping a shocker in three sets to French journeyman Julien Benneteau late Wednesday for his earliest exit in a tournament this year.

That defeat also prolonged a miserable run for the Swiss star at the Paris Bercy tournament having failed to make it past the quarter-finals in seven attempts, his worst record in any of the Masters Series events.

Federer will instead turn his attention to London and the ATP Tour Championships.