| 7‑Nov‑1994 | Moscow | Carpet | R16 | 33 | 11 | (3)Yevgeny Kafelnikov [RUS] d. Haarhuis | 4-6 7-5 6-1 | | 0.82 | 9.5% | 2.9% | 52.4% | 65.5% | 48.0% | 7/11 | 1:53 |
| 7‑Nov‑1994 | Moscow | Carpet | R32 | 33 | 112 | Haarhuis d. Greg Rusedski [GBR] | 7-5 3-6 7-6 | | 1.01 | 3.6% | 2.4% | 75.0% | 73.0% | 66.7% | 0/2 | 1:38 |
| 31‑Oct‑1994 | Paris Masters | Carpet | R32 | 39 | 3 | (6)Boris Becker [GER] d. Haarhuis | 4-6 6-3 6-4 | | | | | | | | | |
| 31‑Oct‑1994 | Paris Masters | Carpet | R64 | 39 | 52 | Haarhuis d. (LL)Daniel Vacek [CZE] | 7-6(4) 6-2 | | 1.20 | 4.5% | 4.5% | 67.2% | 82.2% | 59.1% | 1/1 | 1:14 |
| 10‑Oct‑1994 | Tokyo Indoor | Carpet | R16 | 31 | 19 | (9)Richard Krajicek [NED] d. (8)Haarhuis | 6-4 7-6(5) | | 0.68 | 1.2% | 0.0% | 80.2% | 69.6% | 47.1% | 5/6 | 1:22 |
| 10‑Oct‑1994 | Tokyo Indoor | Carpet | R32 | 31 | 135 | (8)Haarhuis d. (Q)Anders Jarryd [SWE] | 6-3 6-4 | | 1.42 | 11.9% | 1.7% | 59.3% | 77.1% | 66.7% | 3/3 | 1:15 |
| 3‑Oct‑1994 | Sydney Indoor | Hard | R32 | 30 | 43 | Mark Woodforde [AUS] d. (6)Haarhuis | 6-2 6-3 | | 0.50 | 5.4% | 3.6% | 64.3% | 52.8% | 50.0% | 8/11 | 1:05 |
| 26‑Sep‑1994 | Kuala Lumpur | Carpet | R32 | 27 | 140 | Shuzo Matsuoka [JPN] d. (1)Haarhuis | 7-6(1) 6-2 | | 0.59 | 3.6% | 1.8% | 61.8% | 61.8% | 61.9% | 2/5 | 1:18 |
| 29‑Aug‑1994 | US Open | Hard | R128 | 29 | 88 | Alex Obrien [USA] d. Haarhuis | 6-3 7-6(1) 6-3 | | | | | | | | | |
| 22‑Aug‑1994 | Schenectady | Hard | R32 | 28 | 147 | Alex Antonitsch [AUT] d. (3)Haarhuis | 6-3 6-1 | | 0.49 | 4.0% | 6.0% | 52.0% | 50.0% | 45.8% | 6/10 | 1:01 |
| 15‑Aug‑1994 | New Haven | Hard | R64 | 28 | 124 | (WC)Vincent Spadea [USA] d. (9)Haarhuis | 6-3 6-2 | | 0.58 | 4.1% | 1.4% | 65.8% | 56.3% | 36.0% | 7/11 | 1:05 |
| 25‑Jul‑1994 | Hilversum | Clay | R16 | 27 | 52 | Richard Fromberg [AUS] d. (4)Haarhuis | 6-4 6-4 | | 0.73 | 6.0% | 3.0% | 44.8% | 80.0% | 37.8% | 7/10 | 1:27 |
| 25‑Jul‑1994 | Hilversum | Clay | R32 | 27 | 54 | (4)Haarhuis d. Jacco Eltingh [NED] | 7-5 7-5 | | 1.29 | 8.1% | 1.4% | 58.1% | 76.7% | 61.3% | 4/5 | 1:29 |
| 18‑Jul‑1994 | Stuttgart Outdoor | Clay | R32 | 27 | 59 | Bernd Karbacher [GER] d. (8)Haarhuis | 7-6(7) 6-2 | | 0.72 | 4.9% | 2.4% | 57.3% | 61.7% | 45.7% | 11/15 | 1:33 |
| 20‑Jun‑1994 | Wimbledon | Grass | R128 | 28 | 44 | Jason Stoltenberg [AUS] d. Haarhuis | 7-6(2) 6-1 6-4 | | 0.65 | 3.7% | 5.5% | 56.0% | 60.7% | 39.6% | 7/13 | |
| 23‑May‑1994 | Roland Garros | Clay | R32 | 25 | 1 | (1)Pete Sampras [USA] d. Haarhuis | 6-1 6-4 6-1 | | 0.44 | 4.0% | 3.0% | 62.4% | 55.6% | 44.7% | 13/19 | |
| 23‑May‑1994 | Roland Garros | Clay | R64 | 25 | 97 | Haarhuis d. (Q)Lars Jonsson [SWE] | 6-3 2-6 1-6 7-5 6-3 | | 1.17 | 8.9% | 0.6% | 62.0% | 76.5% | 46.7% | 11/17 | |
| 23‑May‑1994 | Roland Garros | Clay | R128 | 25 | 48 | Haarhuis d. Henri Leconte [FRA] | 6-4 6-4 6-2 | | 1.29 | 2.1% | 4.2% | 53.7% | 72.5% | 52.3% | 8/10 | |
| 9‑May‑1994 | Rome Masters | Clay | R64 | 23 | 33 | Andrei Chesnokov [RUS] d. (16)Haarhuis | 7-5 6-0 | | 0.58 | 0.0% | 8.8% | 47.4% | 48.1% | 36.7% | 5/11 | 1:15 |
| 2‑May‑1994 | Hamburg Masters | Clay | R16 | 22 | 8 | (4)Andrei Medvedev [UKR] d. (14)Haarhuis | 2-6 6-2 6-2 | | 0.83 | 3.0% | 0.0% | 71.6% | 62.5% | 42.1% | 2/6 | 1:16 |
| 2‑May‑1994 | Hamburg Masters | Clay | R32 | 22 | 126 | (14)Haarhuis d. (Q)Diego Nargiso [ITA] | 6-2 6-2 | | 1.58 | 6.0% | 4.0% | 54.0% | 70.4% | 52.2% | 3/5 | 1:07 |
| 2‑May‑1994 | Hamburg Masters | Clay | R64 | 22 | 98 | (14)Haarhuis d. Carl Uwe Steeb [GER] | 6-0 6-3 | | 1.53 | 4.8% | 1.6% | 50.8% | 78.1% | 54.8% | 2/2 | 1:11 |
| 18‑Apr‑1994 | Monte Carlo Masters | Clay | R32 | 23 | 60 | Slava Dosedel [CZE] d. Haarhuis | 6-2 6-0 | | 0.53 | 0.0% | 7.5% | 57.5% | 34.8% | 23.5% | 1/7 | 1:00 |
| 18‑Apr‑1994 | Monte Carlo Masters | Clay | R64 | 23 | 40 | Haarhuis d. Renzo Furlan [ITA] | 6-1 6-2 | | 2.24 | 2.0% | 2.0% | 58.8% | 86.7% | 57.1% | 5/5 | 1:05 |
| 25‑Mar‑1994 | Davis Cup WG R1: NED vs BEL | Carpet | RR | 21 | 144 | Haarhuis d. Filip Dewulf [BEL] | 6-3 6-7(5) 3-6 6-4 6-4 | | | | | | | | | |
| 25‑Mar‑1994 | Davis Cup WG R1: NED vs BEL | Carpet | RR | 21 | 109 | Haarhuis d. Xavier Daufresne [BEL] | 6-2 6-2 | | | | | | | | | |
| 7‑Mar‑1994 | Miami Masters | Hard | R16 | 21 | 3 | (2)Stefan Edberg [SWE] d. (17)Haarhuis | 7-6(2) 6-1 | | 0.71 | 4.2% | 0.0% | 71.8% | 54.9% | 50.0% | 3/6 | 1:29 |
| 7‑Mar‑1994 | Miami Masters | Hard | R32 | 21 | 147 | (17)Haarhuis d. (WC)Jan Apell [SWE] | 6-4 6-3 | | 1.18 | 1.6% | 1.6% | 65.6% | 69.0% | 54.5% | 4/5 | 1:10 |
| 7‑Mar‑1994 | Miami Masters | Hard | R64 | 21 | 100 | (17)Haarhuis d. Alex Obrien [USA] | 6-0 6-2 | | 1.87 | 14.9% | 6.4% | 53.2% | 80.0% | 59.1% | 2/2 | 1:00 |
| 21‑Feb‑1994 | Rotterdam | Carpet | SF | 25 | 4 | (1)Michael Stich [GER] d. Haarhuis | 6-4 6-3 | | 0.60 | 1.9% | 0.0% | 62.3% | 66.7% | 40.0% | 1/5 | 1:11 |
| 21‑Feb‑1994 | Rotterdam | Carpet | QF | 25 | 16 | Haarhuis d. (6)Alexander Volkov [RUS] | 7-5 6-4 | | 1.31 | 3.0% | 3.0% | 61.2% | 75.6% | 50.0% | 4/6 | 1:48 |
| 21‑Feb‑1994 | Rotterdam | Carpet | R16 | 25 | 41 | Haarhuis d. Ronald Agenor [USA] | 6-1 6-4 | | 2.23 | 9.5% | 0.0% | 59.5% | 84.0% | 70.6% | 0/1 | 0:58 |
| 21‑Feb‑1994 | Rotterdam | Carpet | R32 | 25 | 13 | Haarhuis d. (4)Boris Becker [GER] | 4-6 7-6(5) 6-4 | | 0.86 | 7.6% | 0.0% | 58.1% | 78.7% | 59.1% | 8/9 | 2:26 |
| 14‑Feb‑1994 | Philadelphia | Carpet | F | 36 | 9 | (3)Michael Chang [USA] d. Haarhuis | 6-3 6-2 | | 0.63 | 8.2% | 6.1% | 49.0% | 66.7% | 40.0% | 5/9 | 1:10 |
| 14‑Feb‑1994 | Philadelphia | Carpet | SF | 36 | 34 | Haarhuis d. (8)Jaime Yzaga [PER] | 6-3 6-3 | | 1.39 | 13.3% | 1.7% | 58.3% | 77.1% | 48.0% | 4/5 | 1:32 |
| 14‑Feb‑1994 | Philadelphia | Carpet | QF | 36 | 192 | Haarhuis d. Jim Grabb [USA] | 7-6(5) 5-7 6-3 | | 1.15 | 2.8% | 2.8% | 66.7% | 72.2% | 36.1% | 2/8 | 2:49 |
| 14‑Feb‑1994 | Philadelphia | Carpet | R16 | 36 | 46 | Haarhuis d. Renzo Furlan [ITA] | 7-6(5) 4-6 6-1 | | 1.37 | 6.1% | 0.0% | 67.1% | 76.4% | 55.6% | 1/3 | 2:07 |
| 14‑Feb‑1994 | Philadelphia | Carpet | R32 | 36 | 1017 | Haarhuis d. (WC)Jimmy Connors [USA] | 6-4 2-6 7-6(3) | | 1.05 | 13.7% | 2.0% | 63.7% | 63.1% | 54.1% | 9/14 | 2:25 |
| 7‑Feb‑1994 | Memphis | Hard | QF | 36 | 9 | (2)Todd Martin [USA] d. (8)Haarhuis | 6-1 6-7(7) 7-6(2) | | 0.97 | 4.4% | 2.2% | 63.7% | 81.0% | 42.4% | 3/7 | 2:20 |
| 7‑Feb‑1994 | Memphis | Hard | R16 | 36 | 38 | (8)Haarhuis d. (9)Jonathan Stark [USA] | 6-7(2) 6-4 6-4 | | 1.19 | 4.0% | 3.0% | 62.0% | 74.2% | 73.7% | 8/8 | 2:02 |
| 7‑Feb‑1994 | Memphis | Hard | R32 | 36 | 150 | (8)Haarhuis d. (Q)David Nainkin [RSA] | 4-6 6-2 6-0 | | 1.52 | 11.3% | 2.8% | 66.2% | 76.6% | 45.8% | 4/6 | 1:32 |
| 17‑Jan‑1994 | Australian Open | Hard | R32 | 39 | 17 | (15)Ivan Lendl [USA] d. Haarhuis | 4-6 6-2 6-2 6-4 | | 0.71 | 3.9% | 3.9% | 57.8% | 71.6% | 35.2% | 8/14 | |
| 17‑Jan‑1994 | Australian Open | Hard | R64 | 39 | 37 | Haarhuis d. Jonathan Stark [USA] | 6-2 6-4 6-4 | | 1.19 | 2.1% | 3.1% | 62.5% | 73.3% | 58.3% | 4/4 | |
| 17‑Jan‑1994 | Australian Open | Hard | R128 | 39 | 163 | Haarhuis d. (Q)David Nainkin [RSA] | 6-2 6-2 6-4 | | 1.54 | 4.6% | 2.3% | 48.3% | 78.6% | 51.1% | 6/7 | |
| 10‑Jan‑1994 | Jakarta | Hard | R32 | 37 | 143 | Lars Jonsson [SWE] d. (2)Haarhuis | 6-1 6-1 | | 0.56 | 5.6% | 1.9% | 46.3% | 56.0% | 34.5% | 4/9 | 1:03 |
| 3‑Jan‑1994 | Doha | Hard | F | 42 | 5 | (3)Stefan Edberg [SWE] d. Haarhuis | 6-3 6-2 | | 0.60 | 1.7% | 3.3% | 60.0% | 63.9% | 37.5% | 8/11 | 1:17 |
| 3‑Jan‑1994 | Doha | Hard | SF | 42 | 7 | Haarhuis d. (4)Goran Ivanisevic [CRO] | 6-2 6-4 | | 1.57 | 8.8% | 1.8% | 57.9% | 69.7% | 75.0% | 4/4 | 1:10 |
| 3‑Jan‑1994 | Doha | Hard | QF | 42 | 65 | Haarhuis d. Andrei Olhovskiy [RUS] | 6-4 6-2 | | 1.15 | 11.8% | 2.9% | 54.4% | 75.7% | 54.8% | 5/5 | 1:07 |
| 3‑Jan‑1994 | Doha | Hard | R16 | 42 | 205 | Haarhuis d. (Q)Karim Alami [MAR] | 6-4 6-7(5) 6-3 | | 1.33 | 7.1% | 4.1% | 57.1% | 80.4% | 50.0% | 1/3 | 2:37 |
| 3‑Jan‑1994 | Doha | Hard | R32 | 42 | 89 | Haarhuis d. Tomas Carbonell [ESP] | 7-6(6) 4-6 6-1 | | - | 8.1% | 0.9% | 53.2% | 74.6% | 50.0% | 8/11 | 2:24 |