USA
12.01.78, 47 years
50498 $
12.01.78, 47 years
50498 $
Country
Birthdate
Height
Weight
Profi since
Play
Ranking's position
Points
Prize money
Birthdate
Height
Weight
Profi since
Play
Ranking's position
Points
Prize money
USA
16.02.80, 45 years
16.02.80, 45 years
Jeff Williams vs. K. J. Weiss - head to head matches
| 17.07.00 | q 1 | Jeff Williams | K. J. Weiss | 6-3, 6-2 | match details |  Aptos | Hard |
Jeff Williams form & K. J. Weiss form
Jeff Williams - last matches
| USA F29 - Hard | ||||
| 13.11.06 1st round | vs. Dudi Sela | 5-7, 0-2, - Jeff Williams - retired |  | match details |
| USA F28 - Hard | ||||
| 06.11.06 1st round | vs. Jonathan Chu | 6-3, 6-2 |  | match details |
| 06.11.06 2nd round | vs. Christoph Palmanshofer | 6-3, 6-3 | | match details |
| 06.11.06 1/4 | vs. Aleksandar Vlaski | 6-3, 1-6, 2-6 | | match details |
| USA F26 - Hard | ||||
| 16.10.06 2nd round | vs. Ryler Deheart | 3-6, 6-3, 4-6 | | match details |
| 16.10.06 1st round | vs. Michael Venus | 6-4, 6-3 | | match details |
| Tulsa - Hard | ||||
| 25.09.06 q 1 | vs. Vladimir Obradovic | 6-73, 6-74 | | match details |
| Lubbock - Hard | ||||
| 18.09.06 q 1 | vs. Victor Kolik | 6-2, 6-1 | | match details |
| 18.09.06 q 2 | vs. Brendan Evans | 4-6, 2-6 | | match details |
 Vancouver - Hard | ||||
| 01.08.06 1st round | vs. Alex Kuznetsov | 7-5, 1-6, 4-6 | | match details |
| 31.07.06 q 2 | vs. Alexander Reichel | 6-73, 6-2, 6-1 | | match details |
| 31.07.06 qual. | vs. Jamie Baker | 7-63, 6-4 | | match details |
| 31.07.06 q 1 | vs. Chris Drake | 6-1, 6-3 | | match details |
| Los Angeles - Hard | ||||
| 23.07.06 q 2 | vs. Zack Fleishman | 6-75, 4-6 | | match details |
| 22.07.06 q 1 | vs. Jason Zimmermann | 6-2, 6-1 | | match details |
| Aptos - Hard | ||||
| 17.07.06 q 1 | vs. Parker Larsen | 6-0, 6-0 | | match details |
| 17.07.06 qual. | vs. Tobias Clemens | 6-2, 1-6, 6-71 | | match details |
| 17.07.06 q 2 | vs. Dennis Lajola | 6-0, 6-0 | | match details |
| Newport - Grass | ||||
| 08.07.06 q 1 | vs. Mirko Pehar | 6-75, 1-6 | | match details |
| Winnetka - Hard | ||||
| 03.07.06 q 1 | vs. Adam Feeney | 6-2, 7-65 | | match details |
| 03.07.06 q 2 | vs. Ti Chen | 3-6, 2-6 | | match details |
| USA F13 - Hard | ||||
| 19.06.06 1/4 | vs. Michael Yani | 2-6, 0-1, - Jeff Williams - retired | | match details |
| 19.06.06 1st round | vs. Michael Venus | 6-2, 6-2 | | match details |
| 19.06.06 2nd round | vs. Nikita Kryvonos | 6-4, 3-6, 7-66 | | match details |
| USA F12 - Hard | ||||
| 12.06.06 1/4 | vs. Brendan Evans | 6-75, 2-6 | | match details |
| 12.06.06 1st round | vs. Tyler Cleveland | 6-1, 6-3 | | match details |
| 12.06.06 2nd round | vs. Scott Oudsema | 6-4, 7-63 | | match details |
| Yuba City - Hard | ||||
| 05.06.06 q 1 | vs. Tyler Hochwalt | 7-65, 6-1 | | match details |
| 05.06.06 q 2 | vs. Horia Tecau | 4-6, 1-1, - Jeff Williams - retired | | match details |
| Forest Hills - Clay | ||||
| 15.05.06 q 2 | vs. Juan-Pablo Guzman | 3-6, 0-6 | | match details |
K. J. Weiss - last matches
| Forest Hills - Grass | ||||
| 27.06.05 q 2 | vs. Chris Drake | 5-7, 2-6 | | match details |
| 27.06.05 q 1 | vs. Bradley Sherwood | 6-4, 5-2, Bradley Sherwood - retired | | match details |
 El Salvador - Clay | ||||
| 10.01.05 1st round | vs. Eric Gomes | 1-6, 2-6 | | match details |
| Austin - Hard | ||||
| 04.10.04 1st round | vs. Frank Dancevic | 0-6, 1-6 | | match details |
| College Station - Hard | ||||
| 28.09.04 1st round | vs. Ryan Newport | 0-6, 1-6 | | match details |
| USA F17 - Clay | ||||
| 28.06.04 1st round | vs. Tres Davis | 1-6, 2-6 | | match details |
| Forest Hills - Grass | ||||
| 07.06.04 q 1 | vs. Cary Franklin | 6-4, 4-6, 1-6 | | match details |
| Forest Hills - Clay | ||||
| 10.05.04 q 1 | vs. Haig Schneiderman | 6-0, 6-0 | | match details |
| 10.05.04 q 2 | vs. Phillip Harboe | 1-6, 2-6 | | match details |
 New Zealand - Hard | ||||
| 15.03.04 1st round | vs. Sonchat Ratiwatana | 3-6, 2-6 | | match details |
| New Zealand - Hard | ||||
| 08.03.04 1st round | vs. Yong-Il Yoon | 1-6, 1-6 | | match details |
| New Zealand - Hard | ||||
| 01.03.04 1st round | vs. Herbert Wiltschnig | 2-6, 5-7 | | match details |
| Dallas - I. hard | ||||
| 02.02.04 1st round | vs. Bjorn Rehnquist | 1-6, 6-78 | | match details |
| Austin - Hard | ||||
| 11.11.03 1st round | vs. Cecil Mamiit | 3-6, 1-6 | | match details |
| Waco - Hard | ||||
| 27.10.03 1st round | vs. Michael Quintero | 0-6, 2-6 | | match details |
| Newport - Grass | ||||
| 07.07.03 q 1 | vs. Nick Crowell | 4-6, 5-7 | | match details |
| Atlantic City - Hard | ||||
| 09.06.03 q 1 | vs. Luis-Manuel Flores | 3-6, 4-6 | | match details |
| Forest Hills - Clay | ||||
| 12.05.03 q 1 | vs. Jaymon Crabb | 2-6, 3-6 | | match details |
| Scottsdale - Hard | ||||
| 03.03.03 q 1 | vs. Michael Joyce | 1-6, 0-3, - K. J. Weiss - retired | | match details |
| San Antonio - Hard | ||||
| 21.10.02 q 1 | vs. Travis Parrott | 2-6, 2-6 | | match details |
| Burbank - Hard | ||||
| 14.10.02 1st round | vs. Bjorn Rehnquist | 6-71, 2-6 | | match details |
| Bronx - Hard | ||||
| 12.08.02 q 1 | vs. Brandon Wagner | 5-7, 1-6 | | match details |
| Lexington - Hard | ||||
| 29.07.02 q 1 | vs. Karim Ben Mansour | 3-6, 6-75 | | match details |
| Tarzana - Hard | ||||
| 01.04.02 1st round | vs. Denis Golovanov | 1-6, 3-6 | | match details |
| North Miami - Hard | ||||
| 11.03.02 q 1 | vs. Damian Furmanski | 6-73, 2-6 | | match details |
| Dallas - I. hard | ||||
| 28.01.02 1st round | vs. Martin Verkerk | 4-6, 4-6 | | match details |
| Burbank - Hard | ||||
| 29.10.01 1st round | vs. Cecil Mamiit | 0-6, 0-6 | | match details |
| Kerrville - Hard | ||||
| 08.10.01 1st round | vs. Robert Kendrick | 4-6, 4-6 | | match details |
| Burbank - Hard | ||||
| 06.11.00 1st round | vs. Zack Fleishman | 1-6, 2-6 | | match details |
| San Antonio - Hard | ||||
| 25.09.00 1st round | vs. Mark Nielsen | 3-6, 1-6 | | match details |
