8‑May‑1974 | Dallas WCT | Carpet | QF | 2 | 3 | Newcombe d. Tom Okker [NED] | 6-3 6-3 6-2 | | | | | | | | | |
4‑Dec‑1973 | Masters | Hard | SF | 2 | 4 | Tom Okker [NED] d. Newcombe | 3-6 7-5 3-5 RET | | | | | | | | | |
24‑Sep‑1973 | Chicago 2 | Carpet | F | 2 | 6 | Tom Okker [NED] d. Newcombe | 3-6 7-6 6-3 | | | | | | | | | |
20‑Aug‑1973 | Toronto 2 | Clay | QF | | | (3)Tom Okker [NED] d. (10)Newcombe | 7-6(3) 6-2 | | | | | | | | | |
13‑Nov‑1972 | Rotterdam WCT | Carpet | SF | | | (3)Tom Okker [NED] d. (1)Newcombe | 6-4 7-6 | | | | | | | | | |
30‑Oct‑1972 | Gothenberg WCT | Carpet | SF | | | Newcombe d. Tom Okker [NED] | 6-4 7-5 | | | | | | | | | |
25‑Sep‑1972 | Alamo WCT | | SF | | | Newcombe d. Tom Okker [NED] | 6-4 6-1 | | | | | | | | | |
14‑Aug‑1972 | Fort Worth WCT | Hard | SF | | | Newcombe d. Tom Okker [NED] | 6-4 7-6 | | | | | | | | | |
13‑Mar‑1972 | Chicago WCT | Carpet | R16 | | | (3)Tom Okker [NED] d. Newcombe | 7-6 6-4 | | | | | | | | | |
10‑Aug‑1971 | Toronto | Clay | F | | | (1)Newcombe d. (2)Tom Okker [NED] | 7-6 3-6 6-2 7-6 | | | | | | | | | |
10‑Jul‑1971 | Gstaad | Clay | F | | | Newcombe d. Tom Okker [NED] | 6-2 5-7 1-6 7-5 6-3 | | | | | | | | | |
1‑May‑1971 | Dallas WCT | Carpet | SF | | | (1)Newcombe d. (6)Tom Okker [NED] | 7-5 6-4 | | | | | | | | | |
19‑Mar‑1971 | Champions Classic | Carpet | RR | | | Tom Okker [NED] d. Newcombe | 6-4 6-2 1-6 6-3 | | | | | | | | | |
9‑Feb‑1971 | Philadelphia WCT | Carpet | QF | | | (3)Newcombe d. (7)Tom Okker [NED] | 4-6 6-4 7-6(2) | | | | | | | | | |
6‑May‑1970 | Atlanta | Hard | SF | | | Tom Okker [NED] d. Newcombe | 2-6 10-8 6-1 | | | | | | | | | |
4‑Jan‑1970 | Australian Round Robin | Grass | RR | | | Newcombe d. Tom Okker [NED] | 10-8 | | | | | | | | | |
12‑Sep‑1969 | Atlanta | Hard | SF | | | Newcombe d. Tom Okker [NED] | 6-2 4-6 8-6 | | | | | | | | | |
18‑Jul‑1969 | Milwaukee | Clay | SF | | | Tom Okker [NED] d. Newcombe | 6-4 6-4 | | | | | | | | | |
23‑Jun‑1969 | Wimbledon | Grass | QF | | | (6)Newcombe d. (3)Tom Okker [NED] | 8-6 3-6 6-1 7-5 | | | | | | | | | |
28‑May‑1969 | Roland Garros | Clay | QF | | | (5)Tom Okker [NED] d. (4)Newcombe | 5-7 6-2 4-6 6-2 6-2 | | | | | | | | | |
15‑Apr‑1969 | Monte Carlo | Clay | F | | | (2)Tom Okker [NED] d. (5)Newcombe | 8-10 6-1 7-5 6-3 | | | | | | | | | |
13‑Feb‑1969 | Hollywood | Clay | QF | | | Tom Okker [NED] d. Newcombe | 11-9 6-4 | | | | | | | | | |
5‑Jun‑1966 | Beckenham | Grass | QF | | | Newcombe d. Tom Okker [NED] | 6-4 7-5 | | | | | | | | | |
8‑Dec‑1965 | Adelaide | Grass | R16 | | | Tom Okker [NED] d. Newcombe | 6-1 11-9 | | | | | | | | | |
19‑Jul‑1965 | Hilversum | Clay | F | | | Newcombe d. Tom Okker [NED] | 6-2 3-6 6-1 6-4 | | | | | | | | | |
13‑Jan‑1965 | Hobart | Grass | SF | | | Newcombe d. Tom Okker [NED] | 3-6 6-4 4-6 6-4 6-2 | | | | | | | | | |
21‑Dec‑1964 | Adelaide | Grass | R16 | | | Newcombe d. Tom Okker [NED] | 6-3 8-6 | | | | | | | | | |