23‑Nov‑1981 | Johannesburg | Hard | QF | 89 | | Jeff Borowiak [USA] d. Mottram | 7-6 6-3 | | | | | | | | | |
23‑Nov‑1981 | Johannesburg | Hard | R16 | 89 | | Mottram d. Danie Visser [RSA] | 6-1 5-7 8-6 | | | | | | | | | |
23‑Nov‑1981 | Johannesburg | Hard | R32 | 89 | 67 | Mottram d. Tony Giammalva [USA] | 6-1 7-6 | | | | | | | | | |
2‑Nov‑1981 | Hong Kong | Hard | R32 | 95 | 15 | (1)Kim Warwick [AUS] d. Mottram | 5-7 7-5 6-0 | | | | | | | | | |
19‑Oct‑1981 | Tokyo Outdoor | Clay | R16 | 76 | 9 | (1)Eliot Teltscher [USA] d. (12)Mottram | 5-7 7-5 6-3 | | | | | | | | | |
19‑Oct‑1981 | Tokyo Outdoor | Clay | R32 | 76 | | (12)Mottram d. Chris Dunk [USA] | 6-2 6-0 | | | | | | | | | |
19‑Oct‑1981 | Tokyo Outdoor | Clay | R64 | 76 | | (12)Mottram d. (Q)Sachio Kato [JPN] | 7-5 6-0 | | | | | | | | | |
2‑Oct‑1981 | Davis Cup WG SF: ARG vs GBR | Clay | RR | 72 | 6 | Guillermo Vilas [ARG] d. Mottram | 6-3 6-1 6-1 | | | | | | | | | |
2‑Oct‑1981 | Davis Cup WG SF: ARG vs GBR | Clay | RR | 72 | 5 | Jose Luis Clerc [ARG] d. Mottram | 7-5 6-4 | | | | | | | | | |
22‑Jun‑1981 | Wimbledon | Grass | R64 | 49 | 35 | Victor Amaya [USA] d. Mottram | 6-3 6-4 6-2 | | | | | | | | | |
22‑Jun‑1981 | Wimbledon | Grass | R128 | 49 | | Mottram d. (WC)Robin Drysdale [GBR] | 6-1 6-4 4-6 6-3 | | | | | | | | | |
13‑Jun‑1981 | Bristol | Grass | R16 | 45 | | Tim Mayotte [USA] d. (6)Mottram | 7-6 6-4 | | | | | | | | | |
13‑Jun‑1981 | Bristol | Grass | R32 | 45 | 68 | (6)Mottram d. Christophe Roger Vasselin [FRA] | 6-2 6-2 | | | | | | | | | |
18‑May‑1981 | Rome | Clay | R32 | 46 | 19 | (9)Eddie Dibbs [USA] d. Mottram | 4-6 6-4 6-0 | | | | | | | | | |
18‑May‑1981 | Rome | Clay | R64 | 46 | 68 | Mottram d. Andres Gomez [ECU] | 6-4 1-6 6-3 | | | | | | | | | |
20‑Apr‑1981 | Bournemouth | Clay | QF | 49 | 17 | (1)Balazs Taroczy [HUN] d. (7)Mottram | 6-3 6-2 | | | | | | | | | |
20‑Apr‑1981 | Bournemouth | Clay | R16 | 49 | | (7)Mottram d. Gabriel Urpi [ESP] | 6-4 6-1 | | | | | | | | | |
20‑Apr‑1981 | Bournemouth | Clay | R32 | 49 | | (7)Mottram d. Gustavo Guerrero [ARG] | 6-1 6-0 | | | | | | | | | |
13‑Apr‑1981 | Monte Carlo | Clay | R16 | 52 | 27 | Jose Higueras [ESP] d. Mottram | 3-6 6-4 6-1 | | | | | | | | | |
13‑Apr‑1981 | Monte Carlo | Clay | R32 | 52 | 43 | Mottram d. Heinz Gunthardt [SUI] | 6-2 6-0 | | | | | | | | | |
30‑Mar‑1981 | Frankfurt | Carpet | R32 | 47 | 2 | (1)John Mcenroe [USA] d. Mottram | 6-3 6-3 | | | | | | | | | |
23‑Mar‑1981 | Stuttgart Indoor | Hard | R16 | 48 | 99 | Jan Norback [SWE] d. (7)Mottram | 6-3 6-4 | | | | | | | | | |
23‑Mar‑1981 | Stuttgart Indoor | Hard | R32 | 48 | 84 | (7)Mottram d. Onny Parun [NZL] | 2-2 RET | | | | | | | | | |
16‑Mar‑1981 | Rotterdam | Hard | QF | 52 | 4 | (2)Gene Mayer [USA] d. Mottram | 6-1 7-6 | | | | | | | | | |
16‑Mar‑1981 | Rotterdam | Hard | R16 | 52 | 38 | Mottram d. Fritz Buehning [USA] | 7-5 6-1 | | | | | | | | | |
16‑Mar‑1981 | Rotterdam | Hard | R32 | 52 | 18 | Mottram d. (6)Balazs Taroczy [HUN] | 6-2 6-3 | | | | | | | | | |
6‑Mar‑1981 | Davis Cup WG R1: GBR vs ITA | Carpet | RR | 51 | 34 | Mottram d. Adriano Panatta [ITA] | 9-7 3-6 6-3 6-4 | | | | | | | | | |
6‑Mar‑1981 | Davis Cup WG R1: GBR vs ITA | Carpet | RR | 51 | 22 | Mottram d. Corrado Barazzutti [ITA] | 6-3 6-2 6-2 | | | | | | | | | |
26‑Jan‑1981 | Philadelphia | Carpet | R64 | 49 | 21 | (14)Yannick Noah [FRA] d. Mottram | 6-0 RET | | | | | | | | | |
19‑Jan‑1981 | Monterrey WCT | Carpet | R32 | 44 | 59 | Pascal Portes [FRA] d. Mottram | 6-4 6-3 | | | | | | | | | |