12‑Dec‑1983 | Sydney Outdoor | Grass | R32 | | 40 | (5)Paul Mcnamee [AUS] d. Gurfein | 6-4 6-3 | | | | | | | | | |
12‑Dec‑1983 | Sydney Outdoor | Grass | R64 | | | Gurfein d. (Q)Kelly Evernden [NZL] | 5-7 6-2 7-5 | | | | | | | | | |
29‑Nov‑1983 | Australian Open | Grass | R64 | | 18 | (7)Tomas Smid [CZE] d. Gurfein | 6-4 7-6 6-7 6-1 | | | | | | | | | |
29‑Nov‑1983 | Australian Open | Grass | R128 | | | Gurfein d. Huub Van Boeckel [NED] | 7-6 7-6 2-6 4-6 6-3 | | | | | | | | | |
7‑Nov‑1983 | Taipei | Carpet | R16 | | 78 | Glenn Michibata [CAN] d. Gurfein | 7-5 7-6 | | | | | | | | | |
7‑Nov‑1983 | Taipei | Carpet | R32 | | | Gurfein d. (Q)Larry Stefanki [USA] | 7-6 6-1 | | | | | | | | | |
31‑Oct‑1983 | Hong Kong | Hard | R32 | | | Wally Masur [AUS] d. Gurfein | 4-6 6-3 6-0 | | | | | | | | | |
17‑Oct‑1983 | Tokyo Outdoor | Hard | R32 | | 44 | (8)Christophe Roger Vasselin [FRA] d. Gurfein | 6-7 7-6 6-3 | | | | | | | | | |
17‑Oct‑1983 | Tokyo Outdoor | Hard | R64 | | | Gurfein d. Trey Waltke [USA] | 2-6 6-2 7-6 | | | | | | | | | |
3‑Oct‑1983 | Barcelona | Clay | R32 | | 5 | (1)Mats Wilander [SWE] d. Gurfein | 6-2 6-4 | | | | | | | | | |
3‑Oct‑1983 | Barcelona | Clay | R64 | | | Gurfein d. (Q)Morten Ronneberg [NOR] | 6-4 6-4 | | | | | | | | | |
19‑Sep‑1983 | Geneva | Clay | R32 | | 78 | Joakim Nystrom [SWE] d. Gurfein | 6-1 6-3 | | | | | | | | | |
12‑Sep‑1983 | Palermo | Clay | R32 | 96 | 53 | (8)Fernando Luna [ESP] d. Gurfein | 4-6 6-2 6-2 | | | | | | | | | |
30‑Aug‑1983 | US Open | Hard | R128 | 98 | | Scott Lipton [USA] d. Gurfein | 6-2 6-3 3-6 5-7 6-2 | | | | | | | | | |
25‑Jul‑1983 | North Conway | Clay | QF | | 8 | (3)Jose Luis Clerc [ARG] d. Gurfein | 6-3 6-2 | | | | | | | | | |
25‑Jul‑1983 | North Conway | Clay | R16 | | 22 | Gurfein d. (7)Henri Leconte [FRA] | 7-5 7-6 | | | | | | | | | |
25‑Jul‑1983 | North Conway | Clay | R32 | | 49 | Gurfein d. (14)Diego Perez [URU] | 6-3 6-1 | | | | | | | | | |
25‑Jul‑1983 | North Conway | Clay | R64 | | | Gurfein d. Bernard Fritz [FRA] | 2-6 7-6 6-1 | | | | | | | | | |
18‑Jul‑1983 | Kitzbuhel | Clay | R32 | | 41 | (6)Marcos Hocevar [BRA] d. Gurfein | 6-4 6-4 | | | | | | | | | |
18‑Jul‑1983 | Kitzbuhel | Clay | R64 | | | Gurfein d. Frank Puncec [RSA] | 6-4 6-4 | | | | | | | | | |
11‑Jul‑1983 | Bastad | Clay | SF | | 6 | (1)Mats Wilander [SWE] d. Gurfein | 6-3 6-1 | | | | | | | | | |
11‑Jul‑1983 | Bastad | Clay | QF | | 66 | Gurfein d. (7)Bernard Boileau [BEL] | 6-3 6-2 | | | | | | | | | |
11‑Jul‑1983 | Bastad | Clay | R16 | | | Gurfein d. Ronnie Bathman [SWE] | 7-6 7-6 | | | | | | | | | |
11‑Jul‑1983 | Bastad | Clay | R32 | | 34 | Gurfein d. (3)Christophe Roger Vasselin [FRA] | 2-6 6-3 6-1 | | | | | | | | | |
4‑Jul‑1983 | Essen CH | Clay | R32 | | | Rolf Gehring [GER] d. (8)Gurfein | 1-6 6-1 6-0 | | | | | | | | | |
6‑Jun‑1983 | Dortmund CH | Clay | SF | | | (Q)Jerome Vanier [FRA] d. (6)Gurfein | 7-6 3-6 7-6 | | | | | | | | | |
6‑Jun‑1983 | Dortmund CH | Clay | QF | | | (6)Gurfein d. Christophe Freyss [FRA] | 6-3 6-0 | | | | | | | | | |
6‑Jun‑1983 | Dortmund CH | Clay | R16 | | | (6)Gurfein d. Peter Bastiansen [DEN] | 6-0 4-6 7-6 | | | | | | | | | |
6‑Jun‑1983 | Dortmund CH | Clay | R32 | | | (6)Gurfein d. (Q)Udo Riglewski [GER] | 6-1 6-3 | | | | | | | | | |
30‑May‑1983 | Tampere CH | Clay | SF | | | (3)Marko Ostoja [CRO] d. (5)Gurfein | 6-4 6-2 | | | | | | | | | |
30‑May‑1983 | Tampere CH | Clay | QF | | | (5)Gurfein d. Jorgen Windahl [SWE] | 6-4 4-6 7-6 | | | | | | | | | |
30‑May‑1983 | Tampere CH | Clay | R16 | | | (5)Gurfein d. Peter Bastiansen [DEN] | 6-1 6-0 | | | | | | | | | |
30‑May‑1983 | Tampere CH | Clay | R32 | | | (5)Gurfein d. Shahar Perkiss [ISR] | 7-5 6-2 | | | | | | | | | |
23‑May‑1983 | Roland Garros | Clay | R64 | | 16 | (10)Eliot Teltscher [USA] d. Gurfein | 6-3 7-6 6-1 | | | | | | | | | |
23‑May‑1983 | Roland Garros | Clay | R128 | | 70 | Gurfein d. Gianni Ocleppo [ITA] | 6-1 6-3 6-2 | | | | | | | | | |
9‑May‑1983 | Lee-On-Solent CH | Clay | R32 | | | David Mustard [NZL] d. (2)Gurfein | 1-6 6-2 6-0 | | | | | | | | | |
2‑May‑1983 | Parioli CH | Clay | R32 | | | Edoardo Mazza [ITA] d. Gurfein | 7-5 7-5 | | | | | | | | | |
7‑Mar‑1983 | Tunis CH | Clay | R16 | | 52 | (2)Fernando Luna [ESP] d. Gurfein | 6-2 6-1 | | | | | | | | | |
7‑Mar‑1983 | Tunis CH | Clay | R32 | | | Gurfein d. Loic Courteau [FRA] | 6-3 6-1 | | | | | | | | | |
28‑Feb‑1983 | Cairo CH | Clay | R16 | | 53 | (3)Fernando Luna [ESP] d. Gurfein | 2-6 6-3 6-1 | | | | | | | | | |
28‑Feb‑1983 | Cairo CH | Clay | R32 | | | Gurfein d. Jose Garcia Requena [ESP] | 6-4 7-5 | | | | | | | | | |
31‑Jan‑1983 | Caracas | Hard | R32 | | | (Q)David Dowlen [USA] d. Gurfein | 6-4 6-4 | | | | | | | | | |
24‑Jan‑1983 | Guaruja | Hard | R64 | | 98 | Alejandro Ganzabal [ARG] d. Gurfein | 1-6 7-5 6-0 | | | | | | | | | |