5‑Dec‑1988 | Munster CH | Carpet | QF | 113 | 78 | 7-6 6-0 | | | | | | | | | |
5‑Dec‑1988 | Munster CH | Carpet | R16 | 113 | 200 | (7)Davis d. Damir Keretic [GER] | 6-1 6-2 | | | | | | | | | |
5‑Dec‑1988 | Munster CH | Carpet | R32 | 113 | 285 | (7)Davis d. Richard Vogel [CZE] | 6-4 6-3 | | | | | | | | | |
17‑Oct‑1988 | Cherbourg CH | Hard | F | 146 | 277 | (2)Davis d. Jan Apell [SWE] | 6-3 6-4 | | | | | | | | | |
17‑Oct‑1988 | Cherbourg CH | Hard | SF | 146 | 251 | (2)Davis d. Olli Rahnasto [FIN] | 6-2 6-3 | | | | | | | | | |
17‑Oct‑1988 | Cherbourg CH | Hard | QF | 146 | 227 | (2)Davis d. Philippe Pech [FRA] | 6-2 6-2 | | | | | | | | | |
17‑Oct‑1988 | Cherbourg CH | Hard | R16 | 146 | 667 | (2)Davis d. (Q)Peter Nyborg [SWE] | 6-0 6-7 6-4 | | | | | | | | | |
17‑Oct‑1988 | Cherbourg CH | Hard | R32 | 146 | 556 | (2)Davis d. (Q)Cedric Pioline [FRA] | 7-5 6-2 | | | | | | | | | |
10‑Oct‑1988 | Tel Aviv | Hard | QF | 137 | 24 | (1)Brad Gilbert [USA] d. Davis | 6-4 6-3 | | | | | | | | | |
10‑Oct‑1988 | Tel Aviv | Hard | R16 | 137 | 259 | Davis d. Byron Talbot [RSA] | 3-6 6-4 6-4 | | | | | | | | | |
10‑Oct‑1988 | Tel Aviv | Hard | R32 | 137 | 104 | Davis d. (7)Christer Allgardh [SWE] | 6-3 6-1 | | | | | | | | | |
12‑Sep‑1988 | Johannesburg CH | Grass | SF | 159 | 125 | (1)Matt Anger [USA] d. (5)Davis | 6-3 7-5 | | | | | | | | | |
12‑Sep‑1988 | Johannesburg CH | Grass | QF | 159 | 157 | (5)Davis d. (3)Neil Broad [GBR] | 6-7 7-6 6-1 | | | | | | | | | |
12‑Sep‑1988 | Johannesburg CH | Grass | R16 | 159 | 617 | (5)Davis d. Mike De Palmer [USA] | 5-7 6-4 7-6 | | | | | | | | | |
12‑Sep‑1988 | Johannesburg CH | Grass | R32 | 159 | 361 | (5)Davis d. Tertius Reynders [RSA] | 6-1 6-4 | | | | | | | | | |
29‑Aug‑1988 | US Open | Hard | R32 | 192 | 1 | (1)Ivan Lendl [USA] d. (WC)Davis | 6-1 6-4 6-3 | | | | | | | | | |
29‑Aug‑1988 | US Open | Hard | R64 | 192 | 160 | (WC)Davis d. (Q)Jimmy Brown [USA] | 4-6 7-5 6-4 6-2 | | | | | | | | | |
29‑Aug‑1988 | US Open | Hard | R128 | 192 | 91 | (WC)Davis d. Jeremy Bates [GBR] | 6-4 6-3 6-1 | | | | | | | | | |
15‑Aug‑1988 | Cincinnati | Hard | R32 | 190 | 2 | (2)Mats Wilander [SWE] d. (WC)Davis | 6-3 6-4 | | | | | | | | | |
15‑Aug‑1988 | Cincinnati | Hard | R64 | 190 | 243 | (WC)Davis d. (Q)Paul Chamberlin [USA] | 6-4 6-3 | | | | | | | | | |
8‑Aug‑1988 | Montreal / Toronto | Hard | R64 | 184 | 36 | (16)Jay Berger [USA] d. Davis | 6-0 6-3 | | | | | | | | | |
1‑Aug‑1988 | Indianapolis | Hard | R64 | 159 | 68 | (16)Jorge Lozano [MEX] d. Davis | 7-6 6-3 | | | | | | | | | |
25‑Jul‑1988 | Stratton Mountain | Hard | R32 | 170 | 62 | (16)Jim Pugh [USA] d. Davis | 6-3 7-5 | | | | | | | | | |
25‑Jul‑1988 | Stratton Mountain | Hard | R64 | 170 | 75 | Davis d. Jaime Yzaga [PER] | 4-6 6-3 6-4 | | | | | | | | | |
18‑Jul‑1988 | Washington | Hard | R64 | 173 | 68 | (15)Jorge Lozano [MEX] d. Davis | 4-6 6-4 6-3 | | | | | | | | | |
4‑Jul‑1988 | Newport | Grass | R32 | 167 | 143 | Pieter Aldrich [RSA] d. Davis | 6-2 7-5 | | | | | | | | | |
6‑Jun‑1988 | Queen's Club | Grass | R32 | 148 | 7 | (4)Boris Becker [GER] d. Davis | 4-6 6-3 6-4 | | | | | | | | | |
6‑Jun‑1988 | Queen's Club | Grass | R64 | 148 | 62 | Davis d. Jim Grabb [USA] | 6-4 5-7 6-2 | | | | | | | | | |
2‑May‑1988 | Forest Hills | Clay | R64 | 149 | 153 | Marc Flur [USA] d. Davis | 4-6 6-3 6-2 | | | | | | | | | |
11‑Apr‑1988 | Tokyo Outdoor | Hard | R16 | 66 | 3 | (1)Stefan Edberg [SWE] d. (15)Davis | 6-2 7-5 | | | | | | | | | |
11‑Apr‑1988 | Tokyo Outdoor | Hard | R32 | 66 | 424 | (15)Davis d. (WC)Tsuyoshi Fukui [JPN] | 6-3 6-3 | | | | | | | | | |
11‑Apr‑1988 | Tokyo Outdoor | Hard | R64 | 66 | 118 | (15)Davis d. Damir Keretic [GER] | 3-6 6-4 6-4 | | | | | | | | | |
14‑Mar‑1988 | Key Biscayne | Hard | R64 | 63 | 68 | Joey Rive [USA] d. Davis | 6-3 6-7 6-4 6-4 | | | | | | | | | |
14‑Mar‑1988 | Key Biscayne | Hard | R128 | 63 | 21 | Davis d. (12)Christo Van Rensburg [RSA] | 6-2 6-3 6-3 | | | | | | | | | |
22‑Feb‑1988 | Philadelphia | Carpet | R64 | 65 | 95 | Jimmy Brown [USA] d. Davis | 6-3 6-4 | | | | | | | | | |
15‑Feb‑1988 | Memphis | Hard | R32 | 57 | 38 | (10)Kevin Curren [USA] d. Davis | 6-7 6-0 6-2 | | | | | | | | | |
15‑Feb‑1988 | Memphis | Hard | R64 | 57 | 68 | Davis d. Derrick Rostagno [USA] | 6-7 6-3 6-3 | | | | | | | | | |
8‑Feb‑1988 | Lyon | Carpet | R16 | 57 | 186 | (Q)Eduardo Masso [BEL] d. (5)Davis | 6-4 7-5 | | | | | | | | | |
8‑Feb‑1988 | Lyon | Carpet | R32 | 57 | 120 | (5)Davis d. Gilad Bloom [ISR] | 6-1 7-6 | | | | | | | | | |