| 12‑Nov‑2001 | Knoxville CH | Hard | R16 | 86 | 234 | Robby Ginepri [USA] d. (2)Chang | 6-2 7-6(7) | | | | | | | | | |
| 12‑Nov‑2001 | Knoxville CH | Hard | R32 | 86 | 243 | (2)Chang d. (WC)Alex Kim [USA] | 6-3 6-3 | | | | | | | | | |
| 8‑Oct‑2001 | Vienna | Hard | R16 | 60 | 90 | (WC)Stefan Koubek [AUT] d. Chang | 6-3 3-6 7-5 | | 0.98 | 2.5% | 2.5% | 60.8% | 62.5% | 41.9% | 1/7 | 2:27 |
| 8‑Oct‑2001 | Vienna | Hard | R32 | 60 | 14 | Chang d. (5)Goran Ivanisevic [CRO] | 6-7(5) 6-3 6-3 | | 1.55 | 4.7% | 1.2% | 68.2% | 75.9% | 63.0% | 3/4 | 2:07 |
| 1‑Oct‑2001 | Tokyo | Hard | R16 | 58 | 418 | (WC)Takao Suzuki [JPN] d. (6)Chang | 7-6(3) 6-2 | | 0.79 | 8.2% | 0.0% | 59.0% | 61.1% | 60.0% | 3/6 | 1:43 |
| 1‑Oct‑2001 | Tokyo | Hard | R32 | 58 | 134 | (6)Chang d. Axel Pretzsch [GER] | 6-3 6-4 | | 1.38 | 8.3% | 0.0% | 66.7% | 80.0% | 60.0% | 3/3 | 1:13 |
| 24‑Sep‑2001 | Hong Kong | Hard | R16 | 55 | 80 | Andrew Ilie [AUS] d. (7)Chang | 6-3 4-1 RET | | 0.67 | 2.0% | 0.0% | 62.7% | 65.6% | 31.6% | 4/7 | 1:10 |
| 24‑Sep‑2001 | Hong Kong | Hard | R32 | 55 | 100 | (7)Chang d. James Blake [USA] | 7-6(3) 7-5 | | 1.15 | 8.0% | 1.1% | 65.5% | 71.9% | 53.3% | 3/4 | 1:51 |
| 27‑Aug‑2001 | US Open | Hard | R128 | 52 | 26 | (26)Nicolas Lapentti [ECU] d. Chang | 6-2 6-4 6-4 | | 0.56 | 3.0% | 5.1% | 44.4% | 72.7% | 43.6% | 7/12 | 2:29 |
| 13‑Aug‑2001 | Washington | Hard | SF | 63 | 30 | (9)Andy Roddick [USA] d. Chang | 6-4 6-3 | | 0.70 | 8.5% | 0.0% | 59.6% | 78.6% | 36.8% | 3/6 | 1:16 |
| 13‑Aug‑2001 | Washington | Hard | QF | 63 | 21 | Chang d. (4)Fabrice Santoro [FRA] | 6-2 6-4 | | 1.52 | 10.5% | 1.8% | 54.4% | 71.0% | 61.5% | 4/5 | 1:27 |
| 13‑Aug‑2001 | Washington | Hard | R16 | 63 | 28 | Chang d. (11)Guillermo Canas [ARG] | 7-5 2-6 6-4 | | 1.05 | 3.5% | 1.2% | 56.5% | 66.7% | 51.4% | 1/6 | 2:21 |
| 13‑Aug‑2001 | Washington | Hard | R32 | 63 | 23 | Chang d. (8)Nicolas Kiefer [GER] | 3-6 6-3 6-2 | | 1.32 | 8.5% | 4.9% | 47.6% | 74.4% | 65.1% | 3/4 | 2:18 |
| 13‑Aug‑2001 | Washington | Hard | R64 | 63 | 119 | Chang d. Byron Black [ZIM] | 7-6(7) 6-1 | | 1.83 | 10.9% | 3.6% | 54.5% | 90.0% | 64.0% | 0/0 | 1:30 |
| 6‑Aug‑2001 | Cincinnati Masters | Hard | R32 | 70 | 33 | Guillermo Canas [ARG] d. Chang | 5-7 7-5 6-2 | | 0.94 | 5.3% | 3.2% | 46.8% | 68.2% | 40.0% | 5/12 | 2:37 |
| 6‑Aug‑2001 | Cincinnati Masters | Hard | R64 | 70 | 77 | Chang d. Vladimir Voltchkov [BLR] | 6-1 6-3 | | 1.96 | 14.6% | 4.9% | 51.2% | 90.5% | 55.0% | 1/2 | 1:25 |
| 30‑Jul‑2001 | Canada Masters | Hard | R64 | 63 | 41 | Alberto Martin [ESP] d. Chang | 6-2 6-3 | | 0.62 | 3.6% | 3.6% | 43.6% | 54.2% | 32.3% | 3/9 | 1:20 |
| 23‑Jul‑2001 | Los Angeles | Hard | R16 | 42 | 12 | (4)Pete Sampras [USA] d. Chang | 7-6(6) 7-6(2) | | 0.76 | 1.1% | 2.1% | 58.9% | 67.9% | 46.2% | 5/7 | 1:53 |
| 23‑Jul‑2001 | Los Angeles | Hard | R32 | 42 | 207 | Chang d. (Q)Noam Behr [ISR] | 6-2 7-5 | | 1.65 | 3.6% | 1.8% | 55.4% | 77.4% | 60.0% | 3/5 | 1:35 |
| 25‑Jun‑2001 | Wimbledon | Grass | R64 | 48 | 41 | (33)Jonas Bjorkman [SWE] d. Chang | 7-6(4) 7-6(1) 6-4 | | 0.92 | 2.7% | 1.8% | 57.5% | 63.1% | 39.6% | 6/13 | 2:40 |
| 25‑Jun‑2001 | Wimbledon | Grass | R128 | 48 | 94 | Chang d. Jiri Vanek [CZE] | 6-2 6-2 6-7(4) 4-6 6-2 | | 1.23 | 10.1% | 2.2% | 59.0% | 70.7% | 59.6% | 5/8 | 2:59 |
| 11‑Jun‑2001 | Halle | Grass | R32 | 37 | 19 | (7)Thomas Johansson [SWE] d. Chang | 6-2 7-5 | | 0.77 | 2.9% | 1.4% | 55.1% | 60.5% | 35.5% | 4/10 | 1:25 |
| 28‑May‑2001 | Roland Garros | Clay | R64 | 35 | 48 | Andy Roddick [USA] d. Chang | 5-7 6-3 6-4 6-7(5) 7-5 | (ch) | 0.97 | 9.8% | 0.0% | 60.7% | 73.7% | 51.6% | 12/17 | 3:50 |
| 28‑May‑2001 | Roland Garros | Clay | R128 | 35 | 100 | Chang d. Alexander Popp [GER] | 6-3 6-3 6-1 | | 1.59 | 2.5% | 1.2% | 59.3% | 75.0% | 54.5% | 6/8 | 1:43 |
| 14‑May‑2001 | Hamburg Masters | Clay | R32 | 35 | 19 | Franco Squillari [ARG] d. Chang | 6-2 5-7 6-3 | | 0.87 | 0.0% | 1.1% | 62.2% | 64.3% | 29.4% | 5/11 | 2:23 |
| 14‑May‑2001 | Hamburg Masters | Clay | R64 | 35 | 66 | Chang d. (Q)Magnus Gustafsson [SWE] | 6-4 6-4 | | 1.19 | 0.0% | 1.5% | 58.5% | 65.8% | 55.6% | 2/4 | 1:42 |
| 7‑May‑2001 | Rome Masters | Clay | R32 | 32 | 1 | (1)Gustavo Kuerten [BRA] d. Chang | 6-1 6-1 | | 0.61 | 0.0% | 0.0% | 62.5% | 51.4% | 28.6% | 5/10 | 1:12 |
| 7‑May‑2001 | Rome Masters | Clay | R64 | 32 | 43 | Chang d. Fernando Vicente [ESP] | 6-4 7-5 | | 1.03 | 0.0% | 0.0% | 66.7% | 65.4% | 50.0% | 7/9 | 1:41 |
| 23‑Apr‑2001 | Atlanta | Clay | R16 | 32 | 79 | Hyung Taik Lee [KOR] d. (3)Chang | 6-4 7-6(3) | | 0.87 | 0.0% | 1.3% | 65.4% | 58.8% | 59.3% | 3/6 | 1:45 |
| 23‑Apr‑2001 | Atlanta | Clay | R32 | 32 | 80 | (3)Chang d. David Sanchez [ESP] | 7-5 6-3 | | 1.52 | 1.8% | 3.5% | 73.7% | 78.6% | 46.7% | 2/3 | 1:25 |
| 16‑Apr‑2001 | Monte Carlo Masters | Clay | R64 | 33 | 22 | (15)Roger Federer [SUI] d. Chang | 6-4 6-3 | (ch) | 0.86 | 0.0% | 8.2% | 57.4% | 60.0% | 34.6% | 5/10 | 1:25 |
| 9‑Apr‑2001 | Estoril | Clay | R32 | 33 | 167 | (Q)Albert Montanes [ESP] d. (6)Chang | 6-1 6-3 | | 0.62 | 0.0% | 0.0% | 46.7% | 61.9% | 25.0% | 2/7 | 1:18 |
| 19‑Mar‑2001 | Miami Masters | Hard | R64 | 35 | 16 | (16)Mark Philippoussis [AUS] d. Chang | 7-6(2) 6-4 | | 0.83 | 2.5% | 7.4% | 54.3% | 70.5% | 51.4% | 4/5 | 1:59 |
| 19‑Mar‑2001 | Miami Masters | Hard | R128 | 35 | 57 | Chang d. Albert Portas [ESP] | 6-2 6-3 | | 1.71 | 2.2% | 4.4% | 68.9% | 67.7% | 64.3% | 2/4 | 1:07 |
| 12‑Mar‑2001 | Indian Wells Masters | Hard | R64 | 33 | 24 | Carlos Moya [ESP] d. Chang | 6-4 6-4 | | 0.81 | 11.1% | 0.0% | 58.3% | 59.5% | 43.3% | 7/11 | 1:39 |
| 19‑Feb‑2001 | Memphis | Hard | R16 | 33 | 69 | (9)Davide Sanguinetti [ITA] d. (6)Chang | 6-2 6-3 | | 0.50 | 8.6% | 0.0% | 58.6% | 67.6% | 20.8% | 4/8 | 1:13 |
| 19‑Feb‑2001 | Memphis | Hard | R32 | 33 | 196 | (6)Chang d. (Q)Vincent Spadea [USA] | 6-3 6-2 | | 1.47 | 5.2% | 0.0% | 62.1% | 66.7% | 68.2% | 2/3 | 1:16 |
| 15‑Jan‑2001 | Australian Open | Hard | R128 | 33 | 47 | Fabrice Santoro [FRA] d. Chang | 7-5 4-6 6-3 6-4 | | 0.81 | 4.3% | 2.8% | 58.9% | 68.7% | 43.1% | 8/14 | 3:14 |
| 8‑Jan‑2001 | Sydney | Hard | R32 | 32 | 48 | Andrew Ilie [AUS] d. Chang | 6-4 6-3 | | 0.72 | 0.0% | 1.5% | 47.7% | 71.0% | 38.2% | 5/9 | 1:16 |