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 |  |  | | Colleen O'Brien |  | | Residence: | Ann Arbor, MI |
| Birthplace: | Unknown | | Age: | Unknown | | Height: | Unknown | | Plays: | Unknown | | Coaching: | Unknown |  | | Complete Bio | |
Midwest G14 Des. January Series, January 23, 2010
 Midwest G14 Chmp. L3, January 30, 2010
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 32 | Win | Eanna McAdon | 2316 | 6-0; 6-0 | | 16 | Loss | Mary Hanna | | 6-0; 6-4 | | 2 | Loss | Mollie Fox | 283 | 6-0; 6-3 |
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Wilson Jr. Tennis Chmps., February 5, 2010
 Western Michigan Indoor G12,10, February 20, 2010
 Midwest G14 Des. March Series, March 13, 2010
 Deer Lake Spring Open, April 16, 2010
 LH Spring Open, May 14, 2010
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 16 | Win | Megan Miller | | 6-4; 6-0 | | Q | Win | Julia Dunbar | | 6-3; 6-2 | | S | Loss | Drew Fillis | | 6-3; 6-1 |
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USTA National Opens, May 22, 2010
 S.E. Michigan Dst. Muthig Jr. Qualifier, May 28, 2010
 Court One Memorial Classic, May 29, 2010
 Dr. Joe Morris Mem. Classic, June 18, 2010
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 16 | Win | Darby Molloy | | 6-1; 6-2 | | Q | Loss | Haley Meekhof | | 7-6(5); 6-4 |
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Midwest Closed BG14,12 Chmp., June 26, 2010
 USTA National Opens, July 3, 2010
 Midwest Open G14 Chmps., July 11, 2010
 Zone Team BG14 - Kalamazoo, July 28, 2010
 USTA G14 National Chmps., August 7, 2010
 Kentucky Int'l Tennis Derby, September 18, 2010
 The Cincinnati Open, October 22, 2010
 Deer Lake Fall Open, November 5, 2010
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 32 | Win | Angela Schoenhals | | 6-2; 6-1 | | 16 | Win | Rileigh Jackson | | 6-1; 6-0 | | Q | Win | Kendra Sweet | | 6-3; 6-2 | | S | Win | Alexa Sweeney | | 6-2; 6-2 | | F | Loss | Mary Hanna | | 6-4; 6-1 |
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Deer Lake Fall Open, November 12, 2010
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | RR | Win | Sarah Lipworth | | 6-1; 6-0 | | RR | Win | Kelly Greer | | 6-0; 6-0 |
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USTA National Open, November 25, 2010
 Contardi G18-14 Winter Open, December 18, 2010
 USTA Winter National Chmps., December 27, 2010
 * The ranking calculation does not count this match.
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