Cape Town – South Africas Kevin Anderson will face Austrias Dominic Thiem in his opening match of the ATP Finals in London on Sunday.
Anderson, who is making his debut at the prestigious year-end event, was drawn in the Group Lleyton Hewitt alongside Thiem, Switzerlands Roger Federer and Japans Kei Nishikori.
Anderson and Thiem will play the first singles match on Sunday afternoon, with Federer and Nishikori scheduled to play in the evening session.
World No 6 Anderson boasts a 6-2 win-loss record against world No 8 Thiem, but the Austrian has won their last two meetings.
Meanwhile, world No 1 Novak Djokovic leads the Group Guga Kuerten alongside Germanys Alexander Zverev, Croatias Marin Cilic and Americas John Isner.
Zverev will face Cilic in Mondays afternoon session, while Djokovic tackles Isner in the evening session.
South Africa also has a representative in the doubles, with Raven Klaasen and his New Zealand partner Michael Venus the sixth seeds and they will opening their campaign on Sunday against the fourth-seeded pair of Great Britain's Jamie Murray and Bruno Soares of Brazil.
Singles – Group Guga Kuerten
(1) Novak Djokovic (SRB)
(3) Alexander Zverev (GER)
(5) Marin Cilic (CRO)
(8) John Isner (USA)
Singles – Group Lleyton Hewitt
(2) Roger Federer (SUI)
(4) Kevin Anderson (RSA)
(6) Dominic Thiem (AUT)
(7) Kei Nishikori (JPN)
Doubles – Group Knowles/Nestor
(1) Oliver Marach (AUT)/Mate Pavic (CRO)
(3) Lukasz Kubot (POL)/Marcelo Melo (BRA)
(5) Mike Bryan (USA)/Jack Sock (USA)
(8) Pierre-Hugues Herbert (FRA)/Nicolas Mahut (FRA)
Doubles – Group Llodra/Santoro
(2) Juan Sebastian Cabal (COL)/Robert Farah (COL)
(4) Jamie Murray (GBR)/Bruno Soares (BRA)
(6) Raven Klaasen (RSA)/Michael Venus (NZL)
(7) Nikola Mektic (CRO)/Alexander Peya (AUT)
*Note: The groups are named after former champions of the event