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 |  |  | | Zachary Lessen |  | | Residence: | Roslyn Hts, NY |
| Birthplace: | Unknown | | Age: | Unknown | | Height: | Unknown | | Plays: | Unknown | | Coaching: | Unknown |  | | Complete Bio | |
L1 BG14,G12 Chmps., January 2, 2009
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 64 | Loss | Sander Brenner | | 6-0; 6-2 |
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L1 Eastern Des. B14 Closed Chmps., January 9, 2009
 L1 Port Washington Winter Classic, February 6, 2009
 L1 Eastern BG14 Des. Closed Chmps., February 27, 2009
 L1B Challenger, March 13, 2009
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 64 | Loss | Robert Levine | 290 | 6-2; 2-6; 1-0(6) |
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L1 Eastern B14 Des. Closed Chmps., March 20, 2009
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 64 | Win | Steven Koulouris | 1348 | 6-0; 7-6 | | 32 | Loss | Maximilian Schmidt | | 6-2; 6-4 |
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L1 Port Washington Spring Classic, April 13, 2009
 L1 Hard Court Chmps., April 24, 2009
 L1 Anuj Agarwal Memorial, May 8, 2009
 L1 Eastern B14 Des. Closed Chmps., May 15, 2009
 New England Open BG14-12 L3, May 22, 2009
 L1 Port Washington Chmps., June 26, 2009
 USTA National Opens, July 4, 2009
 Southern Open BG14 Chmps., July 11, 2009
 L1 Point Set Chmps, August 25, 2009
 L1B Atlantic Beach Chal., September 11, 2009
 L1 Eastern Des. B14 Closed Chmps., October 2, 2009
 L1 Eastern Des. B14 Closed Chmps., October 16, 2009
 L1 Eastern B14 Des. Closed Chmps., October 30, 2009
 L1 RWTTC Chmps., November 13, 2009
 USTA National Open, November 26, 2009
 L1B Sportime Massapequa Chal., December 18, 2009
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 32 | Loss | Ofir Solomon | | 4-6; 6-3; 10-6 |
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* The ranking calculation does not count this match.
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