Soderling dumps Djokovic at World Tour Finals

Swede Robin Soderling claimed his second major upset at the ATP World Tour Finals on Wednesday when he beat world number three Novak Djokovic 7-6, 6-1.

Soderling, only competing in the elite year-end showpiece at London's O2 Arena because of the withdrawal of Andy Roddick, backed up his opening Group B victory over Rafael Nadal with another magnificent display to all but seal a semi-final spot.

Djokovic looked disgruntled throughout the one hour 34 minute contest and offered token resistance after losing the first set.

Soderling, this year's French Open runner-up, had never beaten Djokovic in five previous clashes with the Serb and punched the air with delight after his opponent netted a lame volley on match point.

Djokovic, the defending champion after winning the year-ender in Shanghai last year, will need to re-group quickly for his final round-robin match against Nadal on Friday.

Nadal plays his second round-robin match later on Wednesday against Davydenko with both players seeking a first victory.