Katie O'Brien
 |
Country : Great Britain |
| Birthdate : 2.05.1986 | |
| Birthplace : Beverlay, England | |
| Residence : London, England | |
| Height : 167 cm / 5'6'' | |
| Weight : 63 kg / 139 lbs | |
| Plays : Right-handed/two-handed backhand | |
| Turned Pro : 2004 | |
| Singles Titles : 0 | |
| Doubles Titles : 0 | |
| Website : No | |
| Activity : Matchstat || WTA || ITF || TennisPrediction |
Results in WTA Tournaments :
| Season | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Ranking | 387 | 267 | 193 | 127 | 159 | 88 | 180 | 357 |
| Singles Record | 0-1 | 0-1 | 0-3 | 4-3 | 2-8 | 1-9 | 3-10 | 0-1 |
| Singles Titles | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Australian Open | - | - | - | 2Q | 3Q | 1R | 2R | 1Q |
| French Open | - | - | - | 1Q | 2Q | 1R | 1R | - |
| Wimbledon | 1R | 1R | 1R | 2R | 1R | 1R | 1R | 1R |
| US Open | - | - | 1Q | 1Q | 2Q | 2Q | 3Q | - |
| WTA Championships | - | - | - | - | - | - | - | - |
| Olympics | - | - | - | - | - | - | - | - |
| Doha | - | - | - | - | 1Q | - | - | - |
| Indian Wells | - | - | - | - | 2Q | - | - | - |
| Miami | - | - | - | - | - | - | 2Q | - |
| Rome | - | - | - | - | 1Q | - | - | - |
| Montreal/Toronto | - | - | - | 1Q | 2Q | - | 1Q | - |
| Auckland | - | - | - | 1Q | - | 1Q | 1Q | 3Q |
| Bangalore | - | - | - | - | 1R | - | - | - |
| Birmingham | - | 1Q | 1R | 1Q | 2R | 1R | 1R | - |
| Charleston | - | - | - | - | - | 1R | - | - |
| Cincinnati | - | - | - | - | 1Q | - | - | - |
| Dubai | - | - | - | - | 1Q | - | - | - |
| Eastbourne | - | 1Q | 1R | 2R | 1R | 2Q | 1Q | 1Q |
| Fes | - | - | - | - | 1R | - | 2R | - |
| Guangzhou | - | - | - | - | - | - | 1R | - |
| Linz | - | - | - | - | 1Q | - | - | - |
| Los Angeles | - | - | - | 1Q | - | - | - | - |
| Luxembourg | - | 2Q | - | - | - | - | - | - |
| Memphis | - | - | - | - | - | - | 1R | 2Q |
| New Haven | - | - | - | - | - | - | 1Q | - |
| Osaka | - | - | - | - | - | 2R | - | - |
| Palermo | - | - | - | - | 1R | - | - | - |
| Portoroz | - | - | - | 3Q | 2R | 1R | - | - |
| Prague | - | - | - | - | - | 1R | - | - |
| Quebec City | - | - | - | - | - | 1R | - | - |
| Sydney | - | - | - | - | - | - | 1Q | - |
| Tashkent | - | - | - | QF | 1R | - | 1R | - |
| Season | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
/td
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Maria Emilia Salerni (30)
Andy Murray (25)
Leonardo Mayer (25)
Daniel King-Turner (28)
Anna Floris (30)
Lukasz Kubot (30)
Grigor Dimitrov (21)
Sergio Roitman (33)
Nuria Llagostera Vives (32)
Gabriela Sabatini (42)
Guido Pella (22)
Stephane Robert (32)
Tony Roche (67)
Michael Llodra (32)
Kevin Anderson (26)
Tatsuma Ito (24)
Yannick Noah (52)
Marie-Eve Pelletier (30)
Sebastian Prieto (37)
Reda El Amrani (24)
Heather Watson (20)
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