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 |  |  | | Sean Ko |  | | Residence: | Danville, CA |
| Birthplace: | Unknown | | Age: | Unknown | | Height: | Unknown | | Plays: | Unknown | | Coaching: | Unknown |  | | Complete Bio | |
Happy New Year Lafayette TC Open, January 1, 2010
 19th Jr. Solano Open, January 16, 2010
 Lafayette Tennis Club Open & Nov., January 30, 2010
 Johnson Ranch BG18-10 Chmps., February 27, 2010
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 64 | Loss | Sean Alves | 597 | 7-5; 6-3 |
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S.O.S. Spring Jr. Open & Novice, March 6, 2010
 West Lane BG14-10 Chmps., March 13, 2010
 Diamond Hills Jr. Chmps., March 27, 2010
 Spare Time Jr. Chmps., April 10, 2010
 Rio Del Oro Chmp. Tourn., April 24, 2010
 Fremont TC BG18-10 Open, May 8, 2010
 Spare Time Mem. Day Jr. Excellence, May 22, 2010
 Deer Valley Open, June 4, 2010
 28th Annual Solano Jr. Open, June 11, 2010
 NorCal BG14 Sectional Chmps., June 14, 2010
 48th Capt. Weber Days Jr. Open, June 26, 2010
 Lafayette TC Proud to be an American, July 2, 2010
 A-Z Tennis' East Bay Jr. Open, July 6, 2010
 Tiburon Summer Jr. Open, July 9, 2010
 Ryan Meyer/ Darra Silverman Chal., July 12, 2010
 LTC Heat Wave Open, July 17, 2010
 Fremont TC Jr. Open, July 19, 2010
 Hunter Gallaway's Refuse To Lose, July 24, 2010
 West Coast Chmps., August 2, 2010
 Green Valley Jr. Open Tourn., August 28, 2010
 Carmel Valley AC Fall Jr. Chmps., September 3, 2010
 Santa Cruz TA Jr. Open, September 11, 2010
 Courtside Jr. Chmp., September 18, 2010
 Fremont TC Jr. Chmps., October 2, 2010
 Broadstone Jr. Excellence, October 16, 2010
 Laney Open, October 30, 2010
 Marin Veterans Day Jr. Open, November 11, 2010
 Hunter Gallaway's Holiday Open, December 4, 2010
 Santa Cruz Acad. Christmas Tourn., December 26, 2010
 South Bay End of Year, December 29, 2010
 * The ranking calculation does not count this match.
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