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 |  |  | | Jai Yoon (USA) |  | | Residence: | Oakland Gardens, NY |
| Birthplace: | Unknown | | Age: | Unknown | | Height: | Unknown | | Plays: | Unknown | | Coaching: | Unknown |  | | Complete Bio | |
Copper Bowl 2004, January 1, 2004
 +L1 Eastern Sectional Closed Chmps., January 9, 2004
 L1 Port Washington Winter Classic, February 5, 2004
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 16 | Win | Justin Blumenthal | | 6-2; 6-1 | | Q | Win | Alexander Markovich | + | 6-3; 6-4 | | S | Loss | Justin Salkin | | 6-3; 6-3 |
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+L1 Eastern Sectional Closed Chmps. - Ch, February 27, 2004
 L1 Bobby Kaplan Memorial Tournament - Qu, March 12, 2004
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 64 | Win | Scott Niehaus | | 6-0; 6-1 | | 32 | Win | Alex Leeser | | 6-0; 6-0 | | 16 | Win | Andre Vorobyov | 238 | 6-4; 6-3 | | Q | Loss | Cory Parr | | 6-4; 6-2 |
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The Easter Bowl, USTA National Spring Ch, April 2, 2004
 +L1 Eastern Sectional Closed Chmps. - Ma, April 23, 2004
 L2R Metro Regional Chmps. - Flushing, NY, May 8, 2004
 +L1 Eastern Sectional Closed Chmps. - Oc, May 21, 2004
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 32 | Loss | Robert Ferrante | 139 | 3-6; 6-4; 6-2 | | 1 | Win | Derek DiFazio | 461 | 6-7; 6-0; 6-2 | | 2 | Win | Sean Doerfler | 138 | WJ* | | QQ | Win | Adam Davis | | 6-1; 6-1 | | CQ | Win | Noah Schneider | | 6-2; 6-2 | | CS | Loss | Alexander Markovich | | 7-5; 5-1 RI |
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The Bush Florida Open - Ft. Myers, FL, June 26, 2004
 Burger King Southern Open Championships, July 11, 2004
 USTA Zone Team Chmps - St Louis, MO, July 28, 2004
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | RR | Loss | Rod Bastani | 179 | 6-7; 6-3; 6-3 | | RR | Win | Kyle O'leary | + | 6-4; 6-3 | | RR | Loss | Shankar Ramaswamy | 154 | 6-2; 6-2 | | RR | Win | Thomas Santoro | + | 6-1; 6-4 |
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Midwest Open Junior Championships - High, August 3, 2004
 +L1 Eastern Sectional Closed Chmps. - Oc, October 1, 2004
 +L1 Eastern Sectional Closed Chmps. - R, October 29, 2004
 USTA National Opens - Wayland, MA, November 25, 2004
 Orange Bowl Int'l Tennis Championships p, December 13, 2004
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 128 | Loss | Luis Rovira | | 6-1; 6-0 |
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+ Strong win over an ineligible player. * The ranking calculation does not count this match.
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