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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 12, 2013
 USTA Regional Tourn. (Las Vegas), January 26, 2013
 Johnson Ranch Jr. Chmps., February 9, 2013
 USTA National Open, February 23, 2013
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | 32 | Loss | Chaz Downing | 70 | 1-6; 6-3; 6-4 | 1 | Loss | Kent Mukai | | 6-1; 2-0Ret (inj)RJ |
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Modesto Jr. Chmps., March 2, 2013
 Spare Time Clubs Jr. Chmps., March 16, 2013
 USTA BG16-14 National Spring Chmps., April 7, 2013
 Diamond Hills Jr. Chmps., April 13, 2013
 Rio Del Oro Jr. Chmps., April 27, 2013
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | 32 | Win | Anatoliy Beynars | | 6-4; 6-4 | 16 | Win | Cengiz Aksu | 504 | 6-2; 6-2 | Q | Win | Manpreet Tiwana | + | 6-3; 0-6; 6-3 | S | Loss | Cameron Klinger | 36 | 6-0; 6-0 | PL | Win | Jakob Keppelmann | | 7-6(2); 5-7; 7-6(1) |
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USTA National Open, May 11, 2013
 Spare Time Memorial Day Jr. Excellence, May 18, 2013
 NorCal 16 Jr. Sectional Chmps., June 8, 2013
 USTA Regional Tourn. (Sacramento), July 6, 2013
 USTA B18,16 National Clay Court Chmps., July 14, 2013
 USTA Zone Team GB16 - Salt Lake, July 24, 2013
 USTA B18-16 National Chmps., August 2, 2013
 USTA Regional Tourn. (Seascape), October 26, 2013
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | 32 | Win | Jenteel Alcafaras | | 4-6; 7-5; 6-4 | 16 | Loss | Goutham Sundaram | | 6-0; 2-0Ret (inj)RJ | 2 | Win | Cameron Backman | | 7-5; 0-6; 1-0(7) | QQ | Loss | Everett Maltby | | 5-3Ret (inj)RJ |
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Legler-Roberts Jr. Chmps., November 2, 2013
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | 16 | Loss | Sean Ko | 86 | 6-1; 6-0 |
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Niru's TA Jr. Open & Challenger, November 9, 2013
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | 16 | Win | Kalvin Kwok | | 6-0; 6-0 | Q | Win | Igor Pissarenko | | 6-7(7); 7-6(5); 1-0(3) | S | Win | Max Yun | 460 | 6-2; 6-3 | F | Win | Alessio Paro | | 6-3; 6-0 |
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USTA National Open, November 29, 2013
 Sylvano TA Winter Jr. Open/Chal., December 7, 2013
 + Strong win over an ineligible player. * The ranking calculation does not count this match.
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