WCT Challenge Cup
Singles champions
Columns: Location | Year | Champion | Runner-up | Score
Honolulu | 1976 | Ilie Năstase | Arthur Ashe | 6–3, 1–6, 6–7, 6–3, 6–1 | Las Vegas | 1977 | Ilie Nastase | Jimmy Connors | 3–6, 7–6, 6–4, 7–5 | Montego Bay | 1978 | Ilie Năstase | Peter Fleming | 2–6, 5–6, 6–2, 6–4, 6–4 | Montreal | 1979 | Björn Borg | Jimmy Connors | 6–4, 6–2, 2–6, 6–4 | Montreal | 1980 | John McEnroe | Vijay Amritraj | 6–1, 6–2, 6–1