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 |  |  | | Sebastian Mermersky |  | | Residence: | Washington, DC |
| Birthplace: | Unknown | | Age: | Unknown | | Height: | Unknown | | Plays: | Unknown | | Coaching: | Unknown |  | | Complete Bio | |
USTA MAS B14 Chmp. #1, January 7, 2012
 USTA MAS B16 Chmp. #1, January 14, 2012
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 32 | Loss | Riley Brosnan | | 6-2; 6-3 | | 1 | Win | Vijay Golla | | 6-2; 7-5 | | 2 | Loss | Alex Cauneac | | 7-5; 7-6(8) |
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USTA Regional Tourn. (Dayton), January 21, 2012
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 32 | Win | Adam Seitz | 878 | 6-2; 6-2 | | 16 | Loss | JJ Wolf | 46 | 6-1; 4-6; 6-3 | | 2 | Win | Jacob Wareti | | 7-5; 7-6(4) | | QQ | Loss | Connor Johnston | | 6-4; 6-3 |
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USTA MAS BG16 Challenger #1, February 11, 2012
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 32 | Win | Vijay Golla | | 6-2; 6-3 | | 16 | Win | Mark Prettyman | | 6-4; 7-6(5) | | Q | Loss | Evan Zhu | 6 | 6-2; 6-0 |
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USTA MAS B14 Challenger #1, February 17, 2012
 USTA National Open, February 25, 2012
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 32 | Win | Brian Boyar | + | 4-6; 6-3; 6-3 | | 16 | Loss | William Genesen | | 6-3; 6-3 | | 2 | Win | Tom Bickel | 567 | 6-4; 6-4 | | QQ | Win | Race Collins | | 6-0; 4-2Ret (inj)RJ | | CQ | Loss | Joseph Gray | | 5-4Ret (emerg)RJ |
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USTA MAS B16 Chmp. #2, March 17, 2012
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 32 | Loss | Dennis Wang | | 6-2; 6-1 | | 1 | Win | Michael Li | 43 | 6-3; 6-4 | | 2 | Win | Andrew Harrington | + | 6-4; 6-3 | | QQ | Win | Jack Thomas | + | 6-3; 6-2 | | CQ | Loss | Darian Hashemzadeh | | 6-2; 4-6; 6-3 |
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USTA MAS B14 Chmp. #2, March 24, 2012
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 32 | Win | Eric Yoo | 363 | 7-5; 6-3 | | 16 | Win | Jack Tascher | 202 | 6-3; 6-4 | | Q | Win | Mark Prettyman | | 7-6(4); 3-6; 6-2 | | S | Loss | Jacob Walker | | 7-6(4); 4-6; 6-2 | | PL | Loss | Ammar Alhogbani | 75 | 6-4; 3-6; 6-2 |
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USTA BG16-14 National Spring Chmps., April 8, 2012
 USTA MAS B16 Challenger #2, April 21, 2012
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 32 | Win | Jeffrey Li | | 6-3; 6-0 | | 16 | Win | Nicholas Mouser | | 7-5; 2-6; 7-6(4) | | Q | Loss | Alex Cauneac | | 6-2; 6-0 |
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USTA MAS B14 Challenger #2, April 28, 2012
 USTA MAS B16 Challenger #3, May 5, 2012
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 32 | Win | Blest Jones | | 3-6; 6-4; 6-4 | | 16 | Loss | Justin Cerny | | 4-6; 6-4; 6-1 |
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USTA National Open, May 12, 2012
 USTA MAS B18 Challenger #3, May 19, 2012
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 32 | Win | Evan Zhu | 6 | Wd (admin)WI* | | 16 | Loss | Biyik Akinsemoyin | | 6-1; 6-0 |
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Mall Annual Jr. Tourn., May 26, 2012
 Georgetown Prep Jr. Open L3, June 2, 2012
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 16 | Win | Paul Webster | | 3-6; 5-4Def (pps)DP* | | Q | Win | Nicholas Zhu | | 6-0; 6-1 | | S | Loss | Aries Wong | | 6-0; 6-0 |
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USTA MAS Championship #3, June 19, 2012
 USTA National Open, July 2, 2012
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 32 | Win | Michael Roehmer | | 6-2; 6-2 | | 16 | Loss | Connor Johnston | | 6-0; 6-0 | | 2 | Win | Louis Siegler | 315 | 6-3; 6-2 | | QQ | Loss | Justin Lee | 31 | 6-0; 6-0 |
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USTA Regional Tourn. (New Haven), July 7, 2012
 USTA B14 National Clay Court Chmps., July 15, 2012
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 128 | Loss | Deepak Indrakanti | | 6-3; 3-6; 7-5 | | 1-W | Win | Richard Ciamarra | 173 | 6-1; 6-2 | | 2-W | Loss | Xavier Oshinowo | | 6-1; 6-2 | | 1-SW | Win | Race Collins | | 6-3; 7-6(3) | | Q-SW | Loss | Vasil Kirkov | 41 | 6-2; 6-4 |
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USTA B14 National Chmps., August 5, 2012
 USTA Regional Tourn. (West Chester), September 1, 2012
 USTA MAS BG18 Challenger #6 L2, September 8, 2012
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 32 | Loss | Noah Fenton | | 6-0; 6-1 |
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USTA MAS B16 Challenger #6, September 15, 2012
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 16 | Win | Charles Kittredge | | 6-3; 3-6; 6-1 | | Q | Loss | Kyrylo Tsygura | 73 | 6-3; 3-6; 6-3 |
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USTA MAS B18-16 Chmp. #4, October 6, 2012
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 32 | Loss | Joshua Leiner | | 6-4; 6-2 | | 1 | Loss | Alexander Reinke | | 6-4; 6-3 |
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Pentagon City Jr. Open #1 L4, October 12, 2012
 USTA Regional Tourn. (Cincinnati), October 27, 2012
 USTA MAS B18 Challenger #7, November 10, 2012
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 64 | Win | Huntington Williams | | 6-2; 6-1 | | 32 | Loss | Shyam Venkatasubramanian | | 6-3; 6-3 |
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USTA MAS B16 Challenger #7, November 16, 2012
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 32 | Win | Alexander Nesterovich | | 6-4; 7-6(6) | | 16 | Win | Camron Cohen | 652 | 7-5; 7-5 | | Q | Win | Mark Prettyman | | 4-6; 6-4; 6-3 | | S | Win | Joseph Cartledge | 102 | 4-6; 7-6(6); 6-4 |
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USTA National Open, November 23, 2012
 USTA MAS BG16 Challenger #8, December 8, 2012
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 32 | Win | William Rose | | 6-3; 6-2 | | 16 | Win | Nikolai Parodi | 265 | 4-6; 6-1; 6-2 | | Q | Win | Charles Kittredge | | 6-2; 6-0 | | S | Win | Jacob Walker | + | 2-6; 7-6(3); 6-2 | | F | Loss | Jason Kros | | 6-3; 6-0 |
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DC Closed Youth Chmps. L4, December 14, 2012
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | RR | Win | Thomas Boley | | 6-2Ret (inj)RJ | | RR | Win | Darian Hashemzadeh | | Wd (inj)WJ* |
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Boars Head Sports Club Jr., December 21, 2012
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 16 | Win | Stuart McCroskey | | 6-0; 6-4 | | Q | Loss | Justin Cerny | | 0-6; 6-3; 11-9 |
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USTA National Winter Chmps., December 27, 2012
 + Strong win over an ineligible player. * The ranking calculation does not count this match.
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