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 |  |  | | Justin Sun |  | | Residence: | Fremont, CA |
| Birthplace: | Unknown | | Age: | Unknown | | Height: | Unknown | | Plays: | Unknown | | Coaching: | Unknown |  | | Complete Bio | |
SSRC Jr. Excellence, January 30, 2010
 Johnson Ranch BG18-10 Chmps., February 27, 2010
 West Lane BG14-10 Chmps., March 13, 2010
 Diamond Hills Jr. Chmps., March 27, 2010
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 32 | Loss | Andy Huang | 87 | 6-4; 6-4 |
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Spare Time Jr. Chmps., April 10, 2010
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 32 | Loss | Sean Ko | 219 | 6-4; 6-2 |
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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
 NorCal BG14 Sectional Chmps., June 14, 2010
 USTA National Opens, July 3, 2010
 Fremont TC Jr. Open, July 19, 2010
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 64 | Win | Brenden Lum | | 6-2; 6-3 | | 32 | Win | Zachary Chase | | 7-6(4); 6-2 | | 16 | Win | Winston Limhengco | 289 | 6-4; 6-1 | | Q | Loss | Jimmy Le | | 4-6; 6-0; 6-1 |
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West Coast Chmps., August 2, 2010
 Carmel Valley AC Fall Jr. Chmps., September 3, 2010
 Courtside Jr. Chmp., September 18, 2010
 Fremont TC Jr. Chmps., October 2, 2010
 Broadstone Jr. Excellence, October 16, 2010
 Legler-Roberts Tennis Chmps., October 30, 2010
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 64 | Loss | Victor Pham | 74 | 6-2; 6-0 |
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USTA National Open, November 25, 2010
 USTA Winter National Chmps., December 27, 2010
 + Strong win over an ineligible player. * The ranking calculation does not count this match.
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