24‑Dec‑1981 | Australian Open | Grass | QF | 29 | 39 | (12)Hank Pfister [USA] d. (5)Warwick | 6-1 4-6 6-4 6-3 | | | | | | | | | |
24‑Dec‑1981 | Australian Open | Grass | R16 | 29 | 65 | (5)Warwick d. Phil Dent [AUS] | 6-3 6-3 6-0 | | | | | | | | | |
24‑Dec‑1981 | Australian Open | Grass | R32 | 29 | | (5)Warwick d. Jim Gurfein [USA] | 7-5 6-2 7-5 | | | | | | | | | |
24‑Dec‑1981 | Australian Open | Grass | R64 | 29 | | (5)Warwick d. Brad Drewett [AUS] | 6-4 6-1 6-2 | | | | | | | | | |
14‑Dec‑1981 | Sydney Outdoor | Grass | R64 | 22 | | Wayne Hampson [AUS] d. (5)Warwick | 6-4 7-6 | | | | | | | | | |
23‑Nov‑1981 | Johannesburg | Hard | R32 | 16 | | Danie Visser [RSA] d. (2)Warwick | 6-4 7-6 | | | | | | | | | |
9‑Nov‑1981 | Taipei | Carpet | R32 | 17 | 57 | Pat Dupre [USA] d. (1)Warwick | 6-0 7-6 | | | | | | | | | |
2‑Nov‑1981 | Hong Kong | Hard | R16 | 15 | 83 | Van Winitsky [USA] d. (1)Warwick | 6-4 3-0 RET | | | | | | | | | |
2‑Nov‑1981 | Hong Kong | Hard | R32 | 15 | 95 | (1)Warwick d. Buster C Mottram [GBR] | 5-7 7-5 6-0 | | | | | | | | | |
12‑Oct‑1981 | Sydney Indoor | Hard | R32 | 15 | | Jim Delaney [USA] d. (7)Warwick | 6-4 6-4 | | | | | | | | | |
11‑May‑1981 | Hamburg | Clay | R64 | 23 | 72 | Ricardo Ycaza [ECU] d. (9)Warwick | 2-6 RET | | | | | | | | | |
4‑May‑1981 | Nations Cup | Clay | RR | 23 | 95 | Paolo Bertolucci [ITA] d. Warwick | 6-4 6-3 | | | | | | | | | |
23‑Mar‑1981 | Stuttgart Indoor | Hard | R32 | 22 | 67 | Marcos Hocevar [BRA] d. (4)Warwick | 6-4 6-1 | | | | | | | | | |
16‑Mar‑1981 | Rotterdam | Hard | R32 | 22 | 46 | Tim Gullikson [USA] d. Warwick | 6-1 3-6 6-0 | | | | | | | | | |
9‑Mar‑1981 | Brussels | Carpet | QF | 23 | 48 | Sandy Mayer [USA] d. (7)Warwick | 4-1 RET | | | | | | | | | |
9‑Mar‑1981 | Brussels | Carpet | R16 | 23 | | (7)Warwick d. Thierry Stevaux [BEL] | 6-2 7-6 | | | | | | | | | |
9‑Mar‑1981 | Brussels | Carpet | R32 | 23 | | (7)Warwick d. Alain Brichant [BEL] | 4-6 6-1 7-5 | | | | | | | | | |
6‑Mar‑1981 | Davis Cup WG R1: FRA vs AUS | Carpet | RR | 21 | 47 | Pascal Portes [FRA] d. Warwick | 4-6 6-2 9-7 6-4 | | | | | | | | | |
6‑Mar‑1981 | Davis Cup WG R1: FRA vs AUS | Carpet | RR | 21 | 13 | Yannick Noah [FRA] d. Warwick | 6-2 7-5 10-8 | | | | | | | | | |
16‑Feb‑1981 | La Quinta | Hard | R64 | 21 | 81 | Hank Pfister [USA] d. (12)Warwick | 7-6 6-3 | | | | | | | | | |