2‑Nov‑1987 | Stockholm | Hard | R64 | 112 | 84 | Christian Bergstrom [SWE] d. Maurer | 6-3 6-4 | | | | | | | | | |
5‑Oct‑1987 | Basel | Hard | R16 | 112 | 70 | Jaroslav Navratil [CZE] d. Maurer | 6-4 7-5 | | | | | | | | | |
5‑Oct‑1987 | Basel | Hard | R32 | 112 | 96 | Maurer d. Javier Sanchez [ESP] | 3-6 7-6 6-4 | | | | | | | | | |
28‑Sep‑1987 | Palermo | Clay | R32 | 104 | 219 | (Q)Alberto Mancini [ARG] d. (5)Maurer | 6-2 6-1 | | | | | | | | | |
21‑Sep‑1987 | Barcelona | Clay | R64 | 51 | 24 | (10)Tomas Smid [CZE] d. Maurer | 7-6 6-3 | | | | | | | | | |
3‑Aug‑1987 | Kitzbuhel | Clay | R16 | 59 | 5 | (1)Miloslav Mecir [SVK] d. (15)Maurer | 6-2 6-3 | | | | | | | | | |
3‑Aug‑1987 | Kitzbuhel | Clay | R32 | 59 | 93 | (15)Maurer d. Claudio Pistolesi [ITA] | 6-3 6-4 | | | | | | | | | |
3‑Aug‑1987 | Kitzbuhel | Clay | R64 | 59 | 222 | (15)Maurer d. (Q)Javier Frana [ARG] | 6-7 6-2 6-4 | | | | | | | | | |
27‑Jul‑1987 | Hilversum | Clay | R16 | 56 | 33 | (5)Guillermo Perez Roldan [ARG] d. Maurer | 6-7 7-6 7-6 | | | | | | | | | |
27‑Jul‑1987 | Hilversum | Clay | R32 | 56 | 68 | Maurer d. Jean Philippe Fleurian [FRA] | 6-4 6-2 | | | | | | | | | |
13‑Jul‑1987 | Stuttgart Outdoor | Clay | R32 | 52 | 98 | Damir Keretic [GER] d. (15)Maurer | 7-6 6-3 | | | | | | | | | |
6‑Jul‑1987 | Gstaad | Clay | R32 | 51 | 91 | Damir Keretic [GER] d. Maurer | 6-2 6-0 | | | | | | | | | |
22‑Jun‑1987 | Wimbledon | Grass | R64 | 50 | 32 | Jakob Hlasek [SUI] d. Maurer | 6-3 3-6 6-3 6-3 | | | | | | | | | |
22‑Jun‑1987 | Wimbledon | Grass | R128 | 50 | 98 | Maurer d. Carl Uwe Steeb [GER] | 6-4 6-7 6-4 5-7 11-9 | | | | | | | | | |
8‑Jun‑1987 | Queen's Club | Grass | R16 | 54 | 23 | (13)Ramesh Krishnan [IND] d. Maurer | 6-1 7-6 | | | | | | | | | |
8‑Jun‑1987 | Queen's Club | Grass | R32 | 54 | 101 | Maurer d. Dan Goldie [USA] | 6-4 6-3 | | | | | | | | | |
8‑Jun‑1987 | Queen's Club | Grass | R64 | 54 | 6 | Maurer d. (4)Yannick Noah [FRA] | 3-6 7-6 6-3 | | | | | | | | | |
25‑May‑1987 | Roland Garros | Clay | R128 | 58 | 68 | Damir Keretic [GER] d. Maurer | 6-4 6-2 7-5 | | | | | | | | | |
4‑May‑1987 | Forest Hills | Clay | R16 | 64 | 51 | Paul Annacone [USA] d. Maurer | 6-4 6-4 | | | | | | | | | |
4‑May‑1987 | Forest Hills | Clay | R32 | 64 | 75 | Maurer d. Marcel Freeman [USA] | 6-2 4-6 6-4 | | | | | | | | | |
4‑May‑1987 | Forest Hills | Clay | R64 | 64 | 36 | Maurer d. (14)Christo Van Rensburg [RSA] | 7-5 6-4 | | | | | | | | | |
27‑Apr‑1987 | Hamburg | Clay | R64 | 58 | 40 | (16)Milan Srejber [CZE] d. Maurer | 4-6 6-1 7-5 | | | | | | | | | |
20‑Apr‑1987 | Monte Carlo | Clay | R32 | 55 | 11 | (5)Andres Gomez [ECU] d. Maurer | 6-1 6-3 | | | | | | | | | |
20‑Apr‑1987 | Monte Carlo | Clay | R64 | 55 | 38 | Maurer d. Paolo Cane [ITA] | 7-6 6-2 | | | | | | | | | |
13‑Apr‑1987 | Nice | Clay | R32 | 55 | 27 | (6)Tarik Benhabiles [FRA] d. Maurer | 6-1 6-2 | | | | | | | | | |
16‑Mar‑1987 | Rotterdam | Carpet | R16 | 59 | 3 | (1)Stefan Edberg [SWE] d. Maurer | 6-0 6-0 | | | | | | | | | |
16‑Mar‑1987 | Rotterdam | Carpet | R32 | 59 | 208 | Maurer d. (WC)Huub Van Boeckel [NED] | 7-6 6-1 | | | | | | | | | |
2‑Feb‑1987 | Lyon | Carpet | R32 | 65 | 340 | (Q)Jerome Potier [FRA] d. (7)Maurer | 6-4 6-3 | | | | | | | | | |
12‑Jan‑1987 | Australian Open | Grass | R64 | 58 | 151 | Javier Frana [ARG] d. Maurer | 2-6 7-5 6-3 6-4 | | | | | | | | | |
12‑Jan‑1987 | Australian Open | Grass | R128 | 58 | 258 | Maurer d. (WC)Simon Youl [AUS] | 6-4 6-3 7-6 | | | | | | | | | |