Australia: Australian Open - Singles - Qualification |
| Quarter-finals | Qureshi A. | Yoon Y. | 2:0 (6:0, 6:1) | details | 09.01.2002 |
Japan: Tokyo - Singles - Main |
| 1/32-finals | Zib T. | Yoon Y. | 2:0 (6:3, 6:1) | details | 01.10.2001 |
China: Shanghai 2 - Singles - Main |
| 1/8-finals | Behr N. | Yoon Y. | 2:1 (7:6, 6:7, 6:2) | details | 19.09.2001 |
| 1/16-finals | Yoon Y. | Shimada T. | 2:0 (6:4, 6:4) | details | 17.09.2001 |
USA: US Open - Singles - Qualification |
| Semi-finals | Yoon Y. | Okun N. | 1:2 (3:6, 6:3, 64:7) | details | 23.08.2001 |
| Quarter-finals | Fromberg R. | Yoon Y. | 0:2 (65:7, 69:7) | details | 21.08.2001 |
United Kingdom: Wimbledon - Singles - Main |
| 1/64-finals | Kafelnikov Y. | Yoon Y. | 3:0 (6:4, 6:2, 6:4) | details | 25.06.2001 |
United Kingdom: Wimbledon - Singles - Qualification |
| Final | Szymanski J. | Yoon Y. | 1:3 (6:4, 3:6, 67:7, 3:6) | details | 14.06.2001 |
| Semi-finals | Karlovic I. | Yoon Y. | 0:2 (1:6, 2:6) | details | 13.06.2001 |
| Quarter-finals | Roitman S. | Yoon Y. | 0:2 (2:6, 3:6) | details | 11.06.2001 |
France: French Open - Singles - Qualification |
| Semi-finals | Van Lottum J. | Yoon Y. | 2:0 (6:4, 6:1) | details | 24.05.2001 |
| Quarter-finals | Zimonjic N. | Yoon Y. | 1:2 (0:6, 6:4, 2:6) | details | 23.05.2001 |
Australia: Australian Open - Singles - Qualification |
| Quarter-finals | Yoon Y. | Paes L. | 0:2 (5:7, 4:6) | details | 09.01.2001 |
Japan: Tokyo - Singles - Main |
| 1/8-finals | Yoon Y. | Philippoussis M. | 0:2 (67:7, 4:6) | details | 11.10.2000 |
| 1/16-finals | Prinosil D. | Yoon Y. | 1:2 (6:4, 5:7, 1:6) | details | 10.10.2000 |
| 1/32-finals | Yoon Y. | Vinck C. | 2:1 (6:4, 1:6, 6:2) | details | 09.10.2000 |
USA: US Open - Singles - Qualification |
| Quarter-finals | Levy H. | Yoon Y. | 2:0 (6:4, 6:3) | details | 22.08.2000 |
United Kingdom: Wimbledon - Singles - Qualification |
| Quarter-finals | Saulnier C. | Yoon Y. | 2:1 (7:6, 3:6, 6:3) | details | 19.06.2000 |
Australia: Australian Open - Singles - Qualification |
| Quarter-finals | Carlsson M. | Yoon Y. | 2:0 (6:2, 6:2) | details | 13.01.1999 |
USA: US Open - Singles - Main |
| 1/64-finals | Yoon Y. | Stark J. | 0:3 (2:6, 4:6, 4:6) | details | 31.08.1998 |
USA: US Open - Singles - Qualification |
| Final | Yoon Y. | Bozic I. | 2:1 (3:6, 6:2, 6:4) | details | 28.08.1998 |
| Semi-finals | Schuttler R. | Yoon Y. | 1:2 (7:6, 6:7, 2:6) | details | 27.08.1998 |
| Quarter-finals | Fukarek O. | Yoon Y. | 0:2 (5:7, 3:6) | details | 25.08.1998 |
Australia: Australian Open - Singles - Qualification |
| Semi-finals | Ellwood B. | Yoon Y. | 2:0 (6:2, 6:4) | details | 21.01.1998 |
| Quarter-finals | Yoon Y. | Dier D. | 2:1 (2:6, 7:62, 6:3) | details | 19.01.1998 |
Australia: Australian Open - Singles - Qualification |
| Final | Yoon Y. | Wibier F. | 1:2 (7:5, 4:6, 4:6) | details | 10.01.1997 |
| Semi-finals | Ogorodov O. | Yoon Y. | 0:2 (4:6, 3:6) | details | 09.01.1997 |
| Quarter-finals | Yoon Y. | Ilie A. | 2:1 (4:6, 6:2, 6:3) | details | 08.01.1997 |
South Korea: Seoul - Singles - Main |
| 1/16-finals | Johansson T. | Yoon Y. | 2:0 (6:2, 6:1) | details | 22.04.1996 |
Australia: Australian Open - Singles - Qualification |
| Final | Yoon Y. | Cherkasov A. | 0:2 (1:6, 65:7) | details | 18.01.1996 |
| Semi-finals | Ho T. | Yoon Y. | 1:2 (7:60, 2:6, 5:7) | details | 17.01.1996 |
| Quarter-finals | Pavel A. | Yoon Y. | 0:1 RET. (4:6, 2:0) | details | 15.01.1996 |
South Korea: Seoul - Singles - Main |
| 1/16-finals | Lee H. | Yoon Y. | 2:0 (7:67, 6:3) | details | 24.04.1995 |
Hong Kong: Hong Kong - Singles - Main |
| 1/16-finals | Courier J. | Yoon Y. | 2:0 (6:2, 6:4) | details | 17.04.1995 |
Australia: Australian Open - Singles - Qualification |
| Quarter-finals | Yoon Y. | Liggett C. | 2:0 (6:1, 6:3) | details | 16.01.1995 |
| Semi-finals | Yoon Y. | Knowles M. | 1:2 (4:6, 6:2, 2:6) | details | 12.01.1995 |
South Korea: Seoul - Singles - Main |
| 1/16-finals | Yoon Y. | Bates J. | 1:2 (4:6, 7:62, 3:6) | details | 18.04.1994 |
Australia: Australian Open - Singles - Qualification |
| Final | Yoon Y. | Kinnear K. | 0:2 (62:7, 3:6) | details | 15.01.1994 |
| Semi-finals | Apell J. | Yoon Y. | 0:2 (67:7, 2:6) | details | 13.01.1994 |
| Quarter-finals | Painter A. | Yoon Y. | 0:2 (4:6, 0:6) | details | 12.01.1994 |