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 |  |  | | Jonathan Duan |  | | Residence: | Short Hills, NJ |
| Birthplace: | Unknown | | Age: | Unknown | | Height: | Unknown | | Plays: | Unknown | | Coaching: | Unknown |  | | Complete Bio | |
L1 Eastern B14 Des. Closed Chmps., January 8, 2010
 L1B Hardscrabble Chal., January 15, 2010
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 32 | Win | Ian Antonoff | + | 6-3; 6-3 | | 16 | Loss | Michael Wallace | | 6-4; 5-7; 10-5 |
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Courtsense L1B, January 22, 2010
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 64 | Win | Sean Solomonoff | | 6-0; 6-0 | | 32 | Win | Daway Chou-Ren | | 6-4; 2-6; 10-7 | | 16 | Win | Edward Kang | 627 | 6-3; 6-2 | | Q | Loss | Chase Savage | | 6-0; 6-1 |
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L1 Eastern BG14 Des. Closed Chmps., January 29, 2010
 L1 Port Washington Winter Classic Chmps., February 5, 2010
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 64 | Loss | Zachary Lessen | | 6-3; 6-2 |
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L1 Eastern B14 Des. Closed Chmps., February 12, 2010
 L1 Sportime Bethpage B14 Des., May 21, 2010
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 32 | Loss | Edan Sossen | 415 | 1-0Ret (inj)RJ |
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L1 Roser TA Chmps., July 19, 2010
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 32 | Loss | Logan Erickson | | 7-5; 6-1 |
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Zone Team BG14 - Kalamazoo, July 28, 2010
 Texas Open BG14 Chmps., August 2, 2010
 L1B Sportime Massapequa Chal., August 13, 2010
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 16 | Win | Jonathan Fine | | 6-0; 6-0 | | Q | Loss | Benjamin Mermelstein | | 2-6; 6-4; 12-10 |
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L1 Nutley NJ Clay Court Chmps., August 16, 2010
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 64 | Loss | Daniel Wong | | 6-3; 6-1 |
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L1 Banksville Chmps., August 20, 2010
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 64 | Win | Dennis Sult | | Wd (inj)WJ* | | 32 | Loss | Zak Steiner | | 7-6; 6-1 |
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L1 Solaris Fall Chmps., September 24, 2010
 L1 Point Set Eastern Des. B16, October 1, 2010
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 64 | Loss | Matthew Demichiel | | 6-1; 6-3 |
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L1B Tiger Tennis Columbus Challenger, October 8, 2010
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 16 | Win | Alexander Shipp | | 6-2; 6-2 | | Q | Win | Varun Dyapa | + | 2-6; 6-2; 6-2 | | S | Loss | Alex Klion | | 6-2; 6-2 |
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L1 Sportsplex Eastern Des. B16, October 15, 2010
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 128 | Win | Zak Steiner | + | 6-2; 7-5 | | 64 | Loss | Blake Niehaus | | 6-0; 6-2 |
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L1B Long Beach Challenger, October 22, 2010
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 64 | Loss | Alexander Kiam | | 6-2; 6-3 |
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L1 RWTTC Eastern Des. Closed B16, October 29, 2010
 L1 Courtsense, November 12, 2010
 L1 Solaris Thanksgiving Chmps., November 26, 2010
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 64 | Win | Ethan Goldman | | 6-1; 6-1 | | 32 | Loss | Brian Power | | 6-1; 6-1 |
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L1 Justin Gimelstob Children's Fund, December 17, 2010
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 64 | Loss | Jason Ginsburg | | 5-7; 6-4; 10-7 |
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+ Strong win over an ineligible player. * The ranking calculation does not count this match.
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