10‑Oct‑1988 | Sydney Indoor | Hard | R32 | 73 | 121 | Glenn Michibata [CAN] d. Stoltenberg | 6-3 7-5 | | | | | | | | | |
4‑Oct‑1988 | Brisbane | Hard | QF | 73 | 156 | Shuzo Matsuoka [JPN] d. Stoltenberg | 6-3 6-4 | | | | | | | | | |
4‑Oct‑1988 | Brisbane | Hard | R16 | 73 | 125 | Stoltenberg d. Todd Nelson [USA] | 6-4 6-4 | | | | | | | | | |
4‑Oct‑1988 | Brisbane | Hard | R32 | 73 | 216 | Stoltenberg d. (Q)Mark Kratzmann [AUS] | 6-4 6-0 | | | | | | | | | |
29‑Aug‑1988 | US Open | Hard | R32 | 100 | 26 | Ronald Agenor [USA] d. Stoltenberg | 6-3 2-6 6-4 4-6 6-3 | | | | | | | | | |
29‑Aug‑1988 | US Open | Hard | R64 | 100 | 8 | Stoltenberg d. (7)Yannick Noah [FRA] | 6-2 6-7 5-1 RET | | | | | | | | | |
29‑Aug‑1988 | US Open | Hard | R128 | 100 | 129 | Stoltenberg d. Matt Anger [USA] | 6-7 4-6 6-3 6-4 6-4 | | | | | | | | | |
22‑Aug‑1988 | Rye Brook | Hard | QF | 103 | 38 | (2)Ramesh Krishnan [IND] d. Stoltenberg | 6-1 7-6 | | | | | | | | | |
22‑Aug‑1988 | Rye Brook | Hard | R16 | 103 | 136 | Stoltenberg d. Michael Kures [USA] | 6-4 7-6 | | | | | | | | | |
22‑Aug‑1988 | Rye Brook | Hard | R32 | 103 | 109 | Stoltenberg d. Nicklas Kroon [SWE] | 6-4 7-6 | | | | | | | | | |
15‑Aug‑1988 | Cincinnati | Hard | R64 | 103 | 31 | (15)Dan Goldie [USA] d. Stoltenberg | 6-2 2-6 6-4 | | | | | | | | | |
20‑Jun‑1988 | Wimbledon | Grass | R64 | 98 | 5 | (5)Jimmy Connors [USA] d. (Q)Stoltenberg | 7-6 6-3 6-3 | | | | | | | | | |
20‑Jun‑1988 | Wimbledon | Grass | R128 | 98 | 120 | (Q)Stoltenberg d. Yahiya Doumbia [SEN] | 6-4 6-4 6-3 | | | | | | | | | |
6‑Jun‑1988 | Queen's Club | Grass | R16 | 137 | 36 | (10)Christo Van Rensburg [RSA] d. Stoltenberg | 6-1 6-2 | | | | | | | | | |
6‑Jun‑1988 | Queen's Club | Grass | R32 | 137 | 29 | Stoltenberg d. (8)John Fitzgerald [AUS] | 7-6 7-5 | | | | | | | | | |
6‑Jun‑1988 | Queen's Club | Grass | R64 | 137 | 73 | Stoltenberg d. Sammy Giammalva Jr [USA] | 6-3 4-6 6-2 | | | | | | | | | |
9‑May‑1988 | Rome | Clay | R64 | 145 | 75 | Paolo Cane [ITA] d. (Q)Stoltenberg | 3-6 7-5 6-4 | | | | | | | | | |
25‑Apr‑1988 | Lisbon CH | Clay | R16 | 148 | 115 | (5)Alex Antonitsch [AUT] d. Stoltenberg | 7-6 6-7 7-6 | | | | | | | | | |
25‑Apr‑1988 | Lisbon CH | Clay | R32 | 148 | 244 | Stoltenberg d. Jesus Colas [ESP] | 6-2 7-5 | | | | | | | | | |
4‑Apr‑1988 | Madeira CH | Hard | SF | 162 | 330 | Francisco Roig [ESP] d. (1)Stoltenberg | 6-4 6-1 | | | | | | | | | |
4‑Apr‑1988 | Madeira CH | Hard | QF | 162 | 469 | (1)Stoltenberg d. (Q)Carl Turich [AUS] | 6-7 6-4 6-4 | | | | | | | | | |
4‑Apr‑1988 | Madeira CH | Hard | R16 | 162 | 346 | (1)Stoltenberg d. Jose Lopez Maeso [ESP] | 6-7 6-4 6-4 | | | | | | | | | |
4‑Apr‑1988 | Madeira CH | Hard | R32 | 162 | 293 | (1)Stoltenberg d. Todd Woodbridge [AUS] | 3-6 6-2 7-5 | | | | | | | | | |
11‑Jan‑1988 | Australian Open | Hard | R16 | 330 | 2 | (2)Stefan Edberg [SWE] d. (WC)Stoltenberg | 6-3 6-3 6-4 | | | | | | | | | |
11‑Jan‑1988 | Australian Open | Hard | R32 | 330 | 92 | (WC)Stoltenberg d. Joey Rive [USA] | 6-2 6-2 6-2 | | | | | | | | | |
11‑Jan‑1988 | Australian Open | Hard | R64 | 330 | 413 | (WC)Stoltenberg d. (WC)Todd Woodbridge [AUS] | 6-3 6-2 6-4 | | | | | | | | | |
11‑Jan‑1988 | Australian Open | Hard | R128 | 330 | 208 | (WC)Stoltenberg d. Jon Levine [USA] | 6-1 6-3 6-1 | | | | | | | | | |
4‑Jan‑1988 | Sydney Outdoor | Grass | R32 | 333 | 155 | Brad Drewett [AUS] d. (WC)Stoltenberg | 6-4 7-6 | | | | | | | | | |
28‑Dec‑1987 | Adelaide | Hard | R16 | 413 | 102 | Joey Rive [USA] d. (Q)Stoltenberg | 7-5 2-6 6-2 | | | | | | | | | |
28‑Dec‑1987 | Adelaide | Hard | R32 | 413 | 49 | (Q)Stoltenberg d. (2)Michiel Schapers [NED] | 6-3 6-7 6-2 | | | | | | | | | |