WCT Challenge Cup Singles champions Singles champions

| 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 |