INFO: click on player name to show detailed player statistics
Olga Lazarchuk vs. Tiffany Welford - head to head matches
| 24.05.04 | 2nd round | Olga Lazarchuk | Tiffany Welford | 7-5, 4-6, 6-4 | match details |  Tongliao | Hard |
Olga Lazarchuk form & Tiffany Welford form
Olga Lazarchuk - last matches
 Paris - Clay | ||||
| 18.05.05 q 1 | vs. Henrieta Nagyova | 2-6, 0-6 |  | match details |
 Charlottesville - Clay | ||||
| 09.05.05 2nd round | vs. Cindy Watson | 1-4, - Olga Lazarchuk - retired | | match details |
| 09.05.05 1st round | vs. Teryn Ashley | 7-5, 6-4 |  | match details |
| Raleigh - Clay | ||||
| 02.05.05 1/2 | vs. Matea Mezak | 6-2, 5-7, 7-5 | | match details |
| 02.05.05 1st round | vs. Eva Hrdinova | 6-1, 6-4 | | match details |
| 02.05.05 fin | vs. Mary Gambale | 6-3, 6-1 | | match details |
| 02.05.05 2nd round | vs. Evelyn Fauth | 6-1, 6-0 | | match details |
| 02.05.05 1/4 | vs. Milagros Sequera | 6-2, 7-5 | | match details |
| Lafayette - Clay | ||||
| 25.04.05 fin | vs. Edina Gallovits | 2-6, 6-76 | | match details |
| 25.04.05 2nd round | vs. Maria-Fernanda Alves | 6-4, 6-2 | | match details |
| 25.04.05 1/4 | vs. Renata Voracova | 7-64, 6-0 | | match details |
| 25.04.05 1/2 | vs. Zuzana Kucova | 7-5, 3-6, 6-0 | | match details |
| 25.04.05 1st round | vs. Kristen Schlukebir | 4-6, 6-1, 6-3 | | match details |
| Dothan - Clay | ||||
| 18.04.05 1st round | vs. Meilen Tu | 1-6, 6-3, 6-4 | | match details |
| 18.04.05 2nd round | vs. Delia Sescioreanu | 6-2, 3-6, 6-3 | | match details |
| 18.04.05 1/4 | vs. Varvara Lepchenko | 4-6, 1-6 | | match details |
 Hyderabad - Hard | ||||
| 06.02.05 q 2 | vs. Mandy Minella | 4-5, - Olga Lazarchuk - retired | | match details |
| 05.02.05 q 1 | vs. Angelika Bachmann | 6-2, 7-64 | | match details |
 Pattaya City - Hard | ||||
| 31.01.05 qual. | vs. Akgul Amanmuradova | 5-7, 3-6 | | match details |
| 30.01.05 q 2 | vs. Chin-Wei Chan | 3-6, 6-2, 7-64 | | match details |
| 29.01.05 q 1 | vs. Nungnadda Wannasuk | 6-2, 6-1 | | match details |
 Melbourne - Hard | ||||
| 13.01.05 q 1 | vs. Edina Gallovits | 5-7, 5-7 | | match details |
| Hobart - Hard | ||||
| 08.01.05 q 1 | vs. Meilen Tu | Meilen Tu - walk over | | match details |
| 08.01.05 q 2 | vs. Angela Haynes | 3-6, 4-6 | | match details |
| Shenzhen - Hard | ||||
| 01.11.04 1st round | vs. Wan-Ting Liu | 6-3, 6-2 | | match details |
| 01.11.04 2nd round | vs. Jie Zheng | 3-6, 1-6 | | match details |
| Shenzhen - Hard | ||||
| 25.10.04 1st round | vs. Jie Zheng | 4-6, 1-6 | | match details |
 Moscow - Carpet | ||||
| 09.10.04 q 1 | vs. Michaela Pastikova | 3-6, 0-6 | | match details |
 Batumi - Hard | ||||
| 20.09.04 1st round | vs. Salome Chachkhunashvili | 6-2, 6-2 | | match details |
| 20.09.04 1/4 | vs. Ana Ivanovic | 6-3, 2-6, 4-6 | | match details |
Tiffany Welford - last matches
 Waterloo - Clay | ||||
| 19.07.10 1/4 | vs. Eugenie Bouchard | 3-6, 2-6 | | match details |
| 19.07.10 1st round | vs. Dominique Harmath | 6-4, 6-0 | | match details |
| 19.07.10 2nd round | vs. Gabriela Dabrowski | 6-4, 6-3 | | match details |
| Atlanta - Hard | ||||
| 12.07.10 1st round | vs. Caitlin Whoriskey | 5-7, 6-75 | | match details |
| Cleveland - Clay | ||||
| 21.06.10 1st round | vs. Gabriela Paz | 5-7, 1-6 | | match details |
 Mount Pleasant - Clay | ||||
| 14.06.10 1st round | vs. Victoria Duval | 7-63, 5-7, 7-66 | | match details |
| 14.06.10 2nd round | vs. Nicole Gibbs | 7-5, 0-6, 4-6 | | match details |
| Hilton Head - Hard | ||||
| 31.05.10 2nd round | vs. Megan Falcon | 6-76, 5-7 | | match details |
| 31.05.10 1st round | vs. Elizabeth Lumpkin | 7-5, 7-5 | | match details |
| Sumter - Hard | ||||
| 24.05.10 2nd round | vs. Jelena Pandzic | 3-6, 6-75 | | match details |
| 24.05.10 1st round | vs. Chloe Jones | 7-5, 6-3 | | match details |
| Landisville - Hard | ||||
| 17.05.10 1st round | vs. Moe Kawatoko | 6-2, 4-6, 6-4 | | match details |
| 17.05.10 2nd round | vs. Anastasia Kharchenko | 4-6, 2-6 | | match details |
| Sydney - Hard | ||||
| 01.03.10 1st round | vs. Sophie Ferguson | 2-6, 2-6 | | match details |
| Mildura - Grass | ||||
| 15.02.10 1/4 | vs. Sakiko Shimizu | 6-4, 6-3 | | match details |
| 15.02.10 1/2 | vs. Casey Dellacqua | 2-6, 0-6 | | match details |
| 15.02.10 1st round | vs. Etsuko Kitazaki | 6-4, 6-3 | | match details |
| 15.02.10 2nd round | vs. Jessica Moore | 6-3, 6-3 | | match details |
| Burnie - Hard | ||||
| 01.02.10 1st round | vs. Jessica Moore | 4-6, 6-2, 2-6 | | match details |
| Ipswich - Clay | ||||
| 04.05.09 1st round | vs. Moe Kawatoko | 5-7, 6-2, 6-2 | | match details |
| 04.05.09 2nd round | vs. Olivia Rogowska | 4-6, 2-6 | | match details |
| Bundaberg - Clay | ||||
| 27.04.09 2nd round | vs. Emelyn Starr | 1-6, 6-73 | | match details |
| 27.04.09 1st round | vs. Benita Milenkiewicz | 6-3, 6-1 | | match details |
| Mildura - Grass | ||||
| 09.02.09 1st round | vs. Florence Haring | 6-1, 7-65 | | match details |
| 09.02.09 2nd round | vs. Cagla Buyukakcay | 1-6, 6-2, 6-3 | | match details |
| 09.02.09 1/4 | vs. Ksenia Palkina | 3-6, 0-6 | | match details |
| Port Pirie - Hard | ||||
| 20.10.08 1st round | vs. Yurika Sema | 2-6, 3-6 | | match details |
| Traralgon - Hard | ||||
| 06.10.08 1st round | vs. Hanne Skak Jensen | 1-6, 6-3, 1-6 | | match details |
| Kawana - Clay | ||||
| 15.09.08 1st round | vs. Alison Bai | 6-1, 4-6, 0-6 | | match details |
| Bangkok - Hard | ||||
| 26.05.08 1st round | vs. Ankita Bhambri | 2-6, 6-1, 2-6 | | match details |
