The world tennis number one Rafael Nadal will play Spanish compatriot David Ferrer in the ATP World Tour Finals in London, with last year's champion Novak Djokovic and runner-up Roger Federer drawn in the second group.
Nadal, featuring for the sixth time but seeking a maiden title at the season-ending event, will also play against seventh-ranked Czech Tomas Berdych and eighth-ranked Stanislas Wawrinka of Switzerland in Group A.
Title holder Djokovic, who beat Federer last year to claim his second Tour Finals crown, was drawn in Group B along with fifth-ranked Argentine Juan Martin Del Potro and ninth-ranked Frenchman Richard Gasquet.
Six-time champion Federer, ranked sixth, will feature for the 12th consecutive year at the event where the only big name missing will be Briton Andy Murray, who is recovering from back surgery.
The same eight players were involved in this week's Paris Masters quarter-finals.
The winner of each group will play the runner-up in the other section in the semi-finals.