| year | summary | Hard | Clay | I. hard | Carpet | Grass | Acrylic |
| 2005 | 1/2 | 0/0 | 0/1 | 0/0 | 0/0 | 1/1 | 0/0 |
| 2004 | 1/9 | 0/5 | 1/2 | 0/1 | 0/0 | 0/1 | 0/0 |
| 2003 | 0/6 | 0/4 | 0/1 | 0/0 | 0/0 | 0/1 | 0/0 |
| 2002 | 0/7 | 0/6 | 0/0 | 0/1 | 0/0 | 0/0 | 0/0 |
| 2001 | 0/2 | 0/2 | 0/0 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2000 | 0/5 | 0/4 | 0/1 | 0/0 | 0/0 | 0/0 | 0/0 |
| TOTAL | 2/31 | 0/21 | 1/5 | 0/2 | 0/0 | 1/3 | 0/0 |
| perc. % | 6.06 % | 0 % | 16.67 % | 0 % | 0 % | 25 % | 0 % |
K. J. Weiss / scheduled / last
| no matches found |
K. J. Weiss form / surface: Hard
K. J. Weiss / surface: Hard
| 04.10.04 | 1st round | Frank Dancevic | K. J. Weiss | 6-0, 6-1 |  | match details |  Austin | Hard |
| 28.09.04 | 1st round | Ryan Newport | K. J. Weiss | 6-0, 6-1 | | match details | College Station | Hard |
| 15.03.04 | 1st round | Sonchat Ratiwatana | K. J. Weiss | 6-3, 6-2 | | match details |  New Zealand | Hard |
| 08.03.04 | 1st round | Yong-Il Yoon | K. J. Weiss | 6-1, 6-1 | | match details | New Zealand | Hard |
| 01.03.04 | 1st round | Herbert Wiltschnig | K. J. Weiss | 6-2, 7-5 | | match details | New Zealand | Hard |
| 11.11.03 | 1st round | Cecil Mamiit | K. J. Weiss | 6-3, 6-1 | | match details | Austin | Hard |
| 27.10.03 | 1st round | Michael Quintero | K. J. Weiss | 6-0, 6-2 | | match details | Waco | Hard |
| 09.06.03 | q 1 | Luis-Manuel Flores | K. J. Weiss | 6-3, 6-4 | | match details | Atlantic City | Hard |
| 03.03.03 | q 1 | Michael Joyce | K. J. Weiss | 6-1, 3-0, K. J. Weiss - retired | | match details | Scottsdale | Hard |
| 21.10.02 | q 1 | Travis Parrott | K. J. Weiss | 6-2, 6-2 | | match details | San Antonio | Hard |
| 14.10.02 | 1st round | Bjorn Rehnquist | K. J. Weiss | 7-61, 6-2 | | match details | Burbank | Hard |
| 12.08.02 | q 1 | Brandon Wagner | K. J. Weiss | 7-5, 6-1 | | match details | Bronx | Hard |
| 29.07.02 | q 1 | Karim Ben Mansour | K. J. Weiss | 6-3, 7-65 | | match details | Lexington | Hard |
| 01.04.02 | 1st round | Denis Golovanov | K. J. Weiss | 6-1, 6-3 | | match details | Tarzana | Hard |
| 11.03.02 | q 1 | Damian Furmanski | K. J. Weiss | 7-63, 6-2 | | match details | North Miami | Hard |
| 29.10.01 | 1st round | Cecil Mamiit | K. J. Weiss | 6-0, 6-0 | | match details | Burbank | Hard |
| 08.10.01 | 1st round | Robert Kendrick | K. J. Weiss | 6-4, 6-4 | | match details | Kerrville | Hard |
| 06.11.00 | 1st round | Zack Fleishman | K. J. Weiss | 6-1, 6-2 | | match details | Burbank | Hard |
| 25.09.00 | 1st round | Mark Nielsen | K. J. Weiss | 6-3, 6-1 | | match details | San Antonio | Hard |
| 07.08.00 | q 1 | Diego Ayala | K. J. Weiss | 6-1, 6-2 | | match details | Binghamton | Hard |
| 17.07.00 | q 1 | Jeff Williams | K. J. Weiss | 6-3, 6-2 | | match details | Aptos | Hard |
