Nombre: Katie O'Brien
País: United Kingdom
Fecha de nacimiento: 02.05.86, 40 años
altura: 166 cm
peso: 61 kg
Diestro
WTA ranking: 407
TOP posición de la clasificación: 84 (08.02.10, 76900 puntos)
Puntos: 96
Dinero del premio: 525141 $
Partidos totales: 439
ganar: 229
%: 52.16 %
País: United Kingdom
Fecha de nacimiento: 02.05.86, 40 años
altura: 166 cm
peso: 61 kg
Diestro
WTA ranking: 407
TOP posición de la clasificación: 84 (08.02.10, 76900 puntos)
Puntos: 96
Dinero del premio: 525141 $
Partidos totales: 439
ganar: 229
%: 52.16 %
| año | resumen | Difícil | Arcilla | I. difícil | Alfombra | Césped | Acrílico |
| 2011 | 13/17 | 5/5 | 0/0 | 2/5 | 1/1 | 5/6 | 0/0 |
| 2010 | 18/30 | 13/18 | 1/3 | 3/5 | 0/0 | 1/4 | 0/0 |
| 2009 | 47/25 | 15/8 | 3/5 | 22/6 | 5/2 | 2/4 | 0/0 |
| 2008 | 29/37 | 11/16 | 5/7 | 10/7 | 1/3 | 2/4 | 0/0 |
| 2007 | 42/31 | 15/15 | 0/3 | 14/6 | 6/3 | 7/4 | 0/0 |
| 2006 | 37/30 | 19/16 | 1/1 | 12/6 | 3/2 | 2/5 | 0/0 |
| 2005 | 35/26 | 13/10 | 0/0 | 17/8 | 0/2 | 5/6 | 0/0 |
| 2004 | 5/9 | 4/5 | 0/0 | 1/1 | 0/0 | 0/3 | 0/0 |
| 2003 | 2/4 | 0/1 | 0/0 | 0/2 | 0/0 | 2/1 | 0/0 |
| 2002 | 1/1 | 0/0 | 0/0 | 1/1 | 0/0 | 0/0 | 0/0 |
| TOTAL | 229/210 | 95/94 | 10/19 | 82/47 | 16/13 | 26/37 | 0/0 |
| porc. % | 52.16 % | 50.26 % | 34.48 % | 63.57 % | 55.17 % | 41.27 % | 0 % |
Katie O'Brien / programado / pasado
| No se encontraron partidos |
Katie O'Brien form / año 2005
Katie O'Brien / año 2005
| 14.11.05 | 1er ronda | Jenifer Widjaja | Katie O'Brien | 6-3, 6-1 |  | match details |  Puebla | Difícil |
| 07.11.05 | 2da ronda | Violette Huck | Katie O'Brien | 6-1, 2-6, 7-66 | | match details |  Toronto | I. difícil |
| 07.11.05 | 1er ronda | Katie O'Brien | Tania Rice | 6-3, 6-4 |  | match details | ||
| 24.10.05 | 1er ronda | Tatjana Maria | Katie O'Brien | 6-2, 6-0 | | match details |  Istanbul | I. difícil |
| 17.10.05 | 1/4 | Masa Zec-Peskiric | Katie O'Brien | 7-5, 6-4 | | match details |  Lagos | Difícil |
| 17.10.05 | 1er ronda | Katie O'Brien | Fatimah Abinu | 6-1, 6-1 | | match details | ||
| 17.10.05 | 2da ronda | Katie O'Brien | Dominika Cibulkova | 6-3, 3-6, 6-2 | | match details | ||
| 10.10.05 | 1er ronda | Katie O'Brien | Dominika Cibulkova | 7-67, 7-64 | | match details | Lagos | Difícil |
| 10.10.05 | 1/4 | Anne Keothavong | Katie O'Brien | 5-7, 6-2, 6-2 | | match details | ||
| 10.10.05 | 2da ronda | Katie O'Brien | Zuzana Hejdova | 6-1, 7-5 | | match details | ||
| 03.10.05 | 1er ronda | Katie O'Brien | Sarah Riske | 6-3, 6-3 | | match details |  Bolton | I. difícil |
| 03.10.05 | 2da ronda | Katie O'Brien | Emily Webley-Smith | 6-2, 4-6, 7-65 | | match details | ||
| 03.10.05 | 1/4 | Yaroslava Shvedova | Katie O'Brien | 6-1, 6-2 | | match details | ||
| 25.09.05 | c 2 | Denisa Chladkova | Katie O'Brien | 6-3, 6-2 | | match details |  Luxembourg | I. difícil |
| 24.09.05 | c 1 | Katie O'Brien | Andrea Petkovic | 3-6, 6-4, 6-2 | | match details | ||
| 19.09.05 | 1er ronda | Katie O'Brien | Gabriela Velasco-Andreu | 7-64, 6-0 | | match details | Glasgow | I. difícil |
| 19.09.05 | 2da ronda | Elisa Balsamo | Katie O'Brien | 3-6, 6-2, 7-5 | | match details | ||
| 05.09.05 | 1/4 | Olga Vymetalkova | Katie O'Brien | 6-1, 3-6, 6-4 | | match details |  Madrid | Difícil |
| 05.09.05 | 1er ronda | Katie O'Brien | Beatriz Garcia-Vidagany | 6-2, 6-2 | | match details | ||
| 05.09.05 | 2da ronda | Katie O'Brien | Sara Del Barrio-Aragon | 6-4, 6-1 | | match details | ||
| 15.08.05 | 1er ronda | Katie O'Brien | Debbrich Feys | 3-6, 6-3, 6-4 | | match details |  Helsinki | Difícil |
| 15.08.05 | 2da ronda | Irina Kuzmina | Katie O'Brien | 6-2, 6-4 | | match details | ||
| 01.08.05 | 1er ronda | Katie O'Brien | Katarina Zoricic | 6-1, 6-3 | | match details | Vancouver | Difícil |
| 01.08.05 | 1/4 | Tiffany Eklov | Katie O'Brien | 6-1, 3-6, 6-1 | | match details | ||
| 01.08.05 | 2da ronda | Katie O'Brien | Jessica Nguyen | 6-4, 6-2 | | match details | ||
| 18.07.05 | 2da ronda | Katie O'Brien | Sarah Borwell | 6-4, 2-6, 6-1 | | match details |  Hammond | Difícil |
| 18.07.05 | 1/4 | Anda Perianu | Katie O'Brien | 6-2, 1-6, 6-4 | | match details | ||
| 18.07.05 | 1er ronda | Katie O'Brien | Napaporn Tongsalee | 6-0, 7-63 | | match details | ||
| 04.07.05 | 2da ronda | Katie O'Brien | Holly Bagshaw | 4-6, 6-4, 6-3 | | match details | Felixstowe | Césped |
| 04.07.05 | 1/4 | Katie O'Brien | Kathrin Woerle | 6-4, 6-76, 6-3 | | match details | ||
| 04.07.05 | 1er ronda | Katie O'Brien | Rebecca Llewellyn | 6-3, 6-3 | | match details | ||
| 04.07.05 | 1/2 | Jarmila Wolfe | Katie O'Brien | 6-4, 6-4 | | match details | ||
| 20.06.05 | 1er ronda | Kim Clijsters | Katie O'Brien | 6-2, 6-3 | | match details | London | Césped |
| 11.06.05 | c 1 | Katarina Srebotnik | Katie O'Brien | 6-1, 6-2 | | match details | Eastbourne | Césped |
| 05.06.05 | c 1 | Saori Obata | Katie O'Brien | 6-3, 6-2 | | match details | Birmingham | Césped |
| 30.05.05 | 1er ronda | Yoon-Jeong Cho | Katie O'Brien | 7-5, 6-2 | | match details | Surbiton | Césped |
| 23.05.05 | 1er ronda | Katie O'Brien | Rosanna Hatch | 6-2, 6-3 | | match details | Oxford | Césped |
| 23.05.05 | 1/4 | Alice Mackenzie | Katie O'Brien | 6-2, 6-4 | | match details | ||
| 23.05.05 | 2da ronda | Katie O'Brien | Claire De Gubernatis | 6-1, 7-5 | | match details | ||
| 09.05.05 | 1er ronda | Sarah Borwell | Katie O'Brien | 4-6, 6-1, 7-5 | | match details |  Fukuoka | Alfombra |
| 02.05.05 | 1er ronda | Lauren Breadmore | Katie O'Brien | 6-4, 2-6, 6-4 | | match details | Gifu | Alfombra |
| 04.04.05 | 1er ronda | Kyra Nagy | Katie O'Brien | 3-6, 6-3, 6-4 | | match details | Coatzacoalcos | Difícil |
| 28.03.05 | 1er ronda | Katie O'Brien | Nazari Urbina | 6-4, 6-2 | | match details | Poza Rica | Difícil |
| 28.03.05 | 2da ronda | Yvonne Meusburger | Katie O'Brien | 6-3, 6-2 | | match details | ||
| 14.03.05 | 1er ronda | Katie O'Brien | Claire Peterzan | 6-3, 7-5 | | match details | Morelia | Difícil |
| 14.03.05 | 2da ronda | Neuza Silva | Katie O'Brien | 7-5, 2-6, 7-63 | | match details | ||
| 07.02.05 | 1er ronda | Katie O'Brien | Kyra Nagy | 6-3, 3-6, 6-1 | | match details | Redbridge | I. difícil |
| 07.02.05 | 2da ronda | Jane O'Donoghue | Katie O'Brien | 6-2, 7-63 | | match details | ||
| 31.01.05 | 2da ronda | Katie O'Brien | Gaelle Widmer | 7-5, 6-3 | | match details | Sunderland | I. difícil |
| 31.01.05 | 1/4 | Elena Baltacha | Katie O'Brien | 6-4, 6-3 | | match details | ||
| 31.01.05 | 1er ronda | Katie O'Brien | Eva Hrdinova | 3-6, 7-5, 6-1 | | match details | ||
| 24.01.05 | 1/2 | Katie O'Brien | Caroline Maes | 6-2, 6-3 | | match details | Hull | I. difícil |
| 24.01.05 | 1er ronda | Katie O'Brien | Birgit Ritschka | 6-0, 6-0 | | match details | ||
| 24.01.05 | fin | Katie O'Brien | Ivanna Israilova | 6-4, 6-4 | | match details | ||
| 24.01.05 | 2da ronda | Katie O'Brien | Davinia Lobbinger | 7-67, 7-65 | | match details | ||
| 24.01.05 | 1/4 | Katie O'Brien | Mari Andersson | 6-1, 6-4 | | match details | ||
| 17.01.05 | 2da ronda | Katie O'Brien | Diana Vranceanu | 6-2, 6-3 | | match details | Tipton | I. difícil |
| 17.01.05 | 1/4 | Katie O'Brien | Melanie South | 6-1, 7-5 | | match details | ||
| 17.01.05 | fin | Irina Bulykina | Katie O'Brien | 6-75, 6-2, 6-4 | | match details | ||
| 17.01.05 | 1/2 | Katie O'Brien | Emily Webley-Smith | 3-2, Emily Webley-Smith - retirado | | match details | ||
| 17.01.05 | 1er ronda | Katie O'Brien | Elizabeth Thomas | 6-2, 6-2 | | match details |