Murray faces Del Potro in opener
Andy Murray will play US Open champion Juan Martin del Potro in the opening singles match at the ATP World Tour Finals in London on Sunday.
The British number one is in Group A of the eight-man event with Argentine Del Potro, Spaniard Fernando Verdasco and Swiss world number one Roger Federer.
Federer faces Verdasco on Sunday evening in the O2 Arena.
Monday's Group B action sees Rafael Nadal take on Robin Soderling before Novak Djokovic meets Nikolay Davydenko. The match between Serbian world number three Djokovic and seventh-ranked Russian Davydenko is a repeat of last year's World Tour singles final - then called the Tennis Masters Cup - in Shanghai which the former won 6-1 7-5.
Murray, 22, reached the semi-final on his first appearance at the end-of-season event last year.
The Scot has won four out of his five matches against world number five Del Potro, including their last meeting in the Montreal Masters final in August.
In October, Del Potro was forced to retire from his Shanghai Masters second-round match against Jurgen Melzer while trailing 5-7 1-2 because of a wrist problem.
Murray is looking to win the title on home soil while Federer and Nadal are battling it out for the right to finish the season as world number one.
The tournament is being held in London for the first time after moving from Shanghai and the winner will take home nearly £1m if they win all their matches.
The matches in London are all best of three tie-break sets with two players from each group going through to the semi-finals.
The final is scheduled for Sunday, 29 November.
Andy Murray will play US Open champion Juan Martin del Potro in the opening singles match at the ATP World Tour Finals in London on Sunday.
The British number one is in Group A of the eight-man event with Argentine Del Potro, Spaniard Fernando Verdasco and Swiss world number one Roger Federer.
Federer faces Verdasco on Sunday evening in the O2 Arena.
Monday's Group B action sees Rafael Nadal take on Robin Soderling before Novak Djokovic meets Nikolay Davydenko. The match between Serbian world number three Djokovic and seventh-ranked Russian Davydenko is a repeat of last year's World Tour singles final - then called the Tennis Masters Cup - in Shanghai which the former won 6-1 7-5.
Murray, 22, reached the semi-final on his first appearance at the end-of-season event last year.
The Scot has won four out of his five matches against world number five Del Potro, including their last meeting in the Montreal Masters final in August.
In October, Del Potro was forced to retire from his Shanghai Masters second-round match against Jurgen Melzer while trailing 5-7 1-2 because of a wrist problem.
Murray is looking to win the title on home soil while Federer and Nadal are battling it out for the right to finish the season as world number one.
The tournament is being held in London for the first time after moving from Shanghai and the winner will take home nearly £1m if they win all their matches.
The matches in London are all best of three tie-break sets with two players from each group going through to the semi-finals.
The final is scheduled for Sunday, 29 November.