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 |  |  | | Sebastian Mermersky |  | | Residence: | Washington, DC |
| Birthplace: | Unknown | | Age: | Unknown | | Height: | Unknown | | Plays: | Unknown | | Coaching: | Unknown |  | | Complete Bio | |
USTA MAS B18 Challenger #3, May 19, 2012
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 32 | Win | Evan Zhu | 3 | Wd (admin)WI* | | 16 | Loss | Biyik Akinsemoyin | | 6-1; 6-0 |
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Mall Annual Jr. Tourn., May 26, 2012
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 32 | Win | Stanley Ting | | 6-3; 6-0 | | 16 | Win | Blake Morton | | 6-3; 6-3 | | Q | Loss | Kyrylo Tsygura | 27 | 6-2; 6-3 |
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Georgetown Prep Jr. Open L3, June 2, 2012
 USTA MAS Championship #3, June 19, 2012
 USTA National Open, July 2, 2012
 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 | 150 | 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 | 23 | 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 | 27 | 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
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 16 | Win | Payam Ahmadi | + | 6-1; 6-3 | | Q | Win | Peter Pomajevich | | 6-0; 6-0 | | S | Win | Teddy Campos | | 6-3; 6-3 | | F | Loss | Adam Fenton | | 6-3; 6-3 |
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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 | 439 | 7-5; 7-5 | | Q | Win | Mark Prettyman | | 4-6; 6-4; 6-3 | | S | Win | Joseph Cartledge | 64 | 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 | 125 | 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
 USTA MAS Championship #1 B14, January 5, 2013
 USTA MAS B16 Chmp. #1 L1, January 12, 2013
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 32 | Win | Danny Polk | + | 7-6(1); 6-1 | | 16 | Win | Adrien Bouchet | + | 4-6; 6-2; 6-3 | | Q | Loss | Dennis Wang | | 6-3; 6-1 | | CQ | Win | Nicholas Mouser | + | 6-3; 4-6; 6-4 | | CS | Loss | Ammar Alhogbani | 41 | 6-4; 7-5 |
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USTA Regional Tourn. (Glen Cove), January 26, 2013
 USTA MAS BG16 Challenger #1, February 9, 2013
 USTA MAS B18 Challenger #1, February 16, 2013
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 64 | Loss | Alex Cauneac | | Wd (inj)WJ* |
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USTA MAS B14 Chmp. #2, March 2, 2013
 USTA MAS B16 Chmp. #2, March 9, 2013
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 32 | Win | Charles Kittredge | | 6-4; 6-3 | | 16 | Win | Chase Bernstine | 119 | 6-3; 6-3; 7-6 | | Q | Loss | Jacob Walker | | 6-2; 6-3 | | CQ | Loss | Dennis Afanasev | | Wd (emerg)WI* |
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Pentagon City Jr. Open #4 L4, March 22, 2013
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | S | Win | Zachary Skinner | | Def (ns)DP* | | F | Win | Jimmy McGuire | | 6-1; 6-3 |
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Raintree Tr. Ctr. Classic L3, March 30, 2013
 USTA BG16-14 National Spring Chmps., April 7, 2013
 USTA MAS B16 Challenger #2, April 20, 2013
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 16 | Win | Henry Barrett | | 6-2; 6-2 | | Q | Win | Joseph Cartledge | + | 7-5; 6-3 | | S | Loss | Payam Ahmadi | | 6-3; 6-2 | | PL | Loss | Isaac Stolar | | 7-6(3); 6-4 |
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USTA MAS Challenger #2 BG18, April 27, 2013
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 64 | Win | Isaac Stolar | | 6-4; 6-2 | | 32 | Loss | Michael Quang | | 6-3; 6-2 |
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USTA MAS Challenger #3 B16, May 4, 2013
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 32 | Win | Nikolai Parodi | 125 | 6-3; 6-2 | | 16 | Win | Sean Sculley | 120 | 7-6(3); 6-2 | | Q | Win | Yongjin Lee | | 6-0; 6-0 | | S | Loss | Dennis Afanasev | | 6-1; 2-1Ret (ad)RAD |
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USTA National Open, May 11, 2013
 + Strong win over an ineligible player. * The ranking calculation does not count this match.
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