23‑May‑1976 | WCT Challenge Cup | Hard | RR | | | Arthur Ashe [USA] d. Newcombe | 3-6 6-2 6-3 7-5 | | | | | | | | | |
22‑Mar‑1976 | Palm Springs | Hard | QF | | | (2)Arthur Ashe [USA] d. Newcombe | 7-6 4-6 6-4 | | | | | | | | | |
4‑Mar‑1976 | Hartford | Carpet | RR | | | Arthur Ashe [USA] d. Newcombe | 6-3 6-4 | | | | | | | | | |
6‑Mar‑1975 | Hartford | Carpet | RR | 2 | 7 | Newcombe d. Arthur Ashe [USA] | 6-7 6-4 6-2 | | | | | | | | | |
28‑Aug‑1974 | US Open | Grass | QF | 2 | 9 | (2)Newcombe d. (8)Arthur Ashe [USA] | 4-6 6-3 3-6 7-6 6-4 | | | | | | | | | |
18‑Mar‑1974 | Tuscon | Hard | F | 2 | 6 | (1)Newcombe d. (4)Arthur Ashe [USA] | 6-3 7-6 | | | | | | | | | |
7‑Mar‑1974 | Hartford | Carpet | RR | 2 | 6 | Newcombe d. Arthur Ashe [USA] | 6-2 5-7 6-4 | | | | | | | | | |
24‑Jul‑1972 | Louisville WCT | Clay | SF | | | Arthur Ashe [USA] d. Newcombe | 6-4 6-4 | | | | | | | | | |
9‑Mar‑1972 | Hartford | Carpet | RR | | | Newcombe d. Arthur Ashe [USA] | 4-6 6-3 7-5 | | | | | | | | | |
27‑Aug‑1971 | Hilton Head | Clay | SF | | | Newcombe d. Arthur Ashe [USA] | 6-4 7-5 | | | | | | | | | |
1‑May‑1971 | Dallas WCT | Carpet | F | | | (1)Newcombe d. (2)Arthur Ashe [USA] | 7-6 6-4 | | | | | | | | | |
28‑Apr‑1971 | Chicago WCT | Carpet | F | | | (1)Newcombe d. (2)Arthur Ashe [USA] | 4-6 7-6 6-2 | | | | | | | | | |
24‑Apr‑1971 | Boston | Carpet | RR | | | Newcombe d. Arthur Ashe [USA] | 6-4 3-6 6-3 | | | | | | | | | |
2‑Sep‑1970 | US Open | Grass | QF | | | (2)Newcombe d. (7)Arthur Ashe [USA] | 6-1 7-6 5-7 7-6 | | | | | | | | | |
15‑Apr‑1969 | Monte Carlo | Clay | QF | | | (5)Newcombe d. Arthur Ashe [USA] | 8-6 6-3 | | | | | | | | | |
24‑Jun‑1968 | Wimbledon | Grass | R16 | | | (13)Arthur Ashe [USA] d. (4)Newcombe | 6-4 6-4 4-6 1-6 6-3 | | | | | | | | | |
5‑Mar‑1967 | New York Indoors | Carpet | F | | | Newcombe d. Arthur Ashe [USA] | 3-6 6-4 3-1 RET | | | | | | | | | |
20‑Jan‑1967 | Australian Open | Grass | SF | | | Arthur Ashe [USA] d. Newcombe | 12-10 20-22 6-3 6-2 | | | | | | | | | |
24‑Nov‑1966 | Melbourne | Grass | QF | | | Newcombe d. Arthur Ashe [USA] | UNK | | | | | | | | | |
1‑Aug‑1966 | US Open | Grass | R32 | | | Newcombe d. Arthur Ashe [USA] | 6-2 6-3 6-4 | | | | | | | | | |
27‑Mar‑1966 | San Juan | Hard | SF | | | Arthur Ashe [USA] d. Newcombe | 6-3 5-7 6-4 | | | | | | | | | |
11‑Jan‑1966 | Hobart | Grass | F | | | Arthur Ashe [USA] d. Newcombe | 6-4 6-4 12-10 | | | | | | | | | |
15‑Nov‑1965 | Sydney | Grass | F | | | Newcombe d. Arthur Ashe [USA] | 6-8 6-2 7-5 6-1 | | | | | | | | | |
7‑Nov‑1965 | Brisbane | Grass | SF | | | Arthur Ashe [USA] d. Newcombe | 6-4 6-4 6-3 | | | | | | | | | |