Frankfurt, Germany (S) Johannesburg, South Africa (D)
Venue
Festhalle Frankfurt (S)
Champions
Singles
Pete Sampras[1]
Doubles
John Fitzgerald / Anders Järryd[2]
← 1990 ·
ATP Finals
· 1992 →
The 1991 ATP Tour World Championships was the men's tennis season-ending tournament. The singles event was also known as the IBM ATP Tour World Championships and was played on indoor carpet courts at the Festhalle Frankfurt in Germany. The doubles event, also known as the Standard Bank ATP Tour World Doubles Final, was played on indoor hard courts in held in Johannesburg, South Africa. Both competitions were held between 12 November and 17 November 1991. Sixth-seeded Pete Sampras won the singles title and John Fitzgerald with Anders Järryd won the doubles title.[3][4]
^"1991 Tour World Championships – Singles draw". Association of Tennis Professionals (ATP).
^"1991 Tour World Championships – Doubles draw". Association of Tennis Professionals (ATP).
^Collins, Bud (October 2010). "Year-End Championships". The Bud Collins History of Tennis. New York: New Chapter Press. p. 746. ISBN 978-0-942257-70-0.
^John Barrett, ed. (1992). The International Tennis Federation World of Tennis 1992. London: CollinsWillow. pp. 142–146. ISBN 9780002184304.
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Global Information
Pete Sampras[1]
John Fitzgerald / 
Anders Järryd[2]