| |  | 
  | |  |
 |  |  | | Kosuke Hasegawa |  | | Residence: | Wesley Chapel, FL |
| Birthplace: | Unknown | | Birthdate: | Unknown | | Height: | Unknown | | Plays: | Unknown | | Coaching: | Unknown |  | | Complete Bio | |
Seminole Lake Super Series, January 3, 2004
 Fun & Sun Winter Sectional B12, January 17, 2004
 Orange County Winter Designated BG 12 &, February 7, 2004
 USTA National Opens - Columbus, GA, February 21, 2004
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 64 | Loss | John Richmond | 91 | 7-6(5); 7-6(5) | | 1 | Loss | Matthew Colonnese | | 6-4; 7-5 |
|  |  |
Cooper City Spring Sectional B12 - Coope, March 6, 2004
 B12 National Spring Championships, April 18, 2004
 2004 USTA National 12 Open, May 22, 2004
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 64 | Win | Matthew Colonnese | + | 3-6;6-3;1-0[7] | | 32 | Loss | Alex Houck | | 6-2;6-2 | | 2 | Loss | Bradley Silverman | | 6-0;6-0 |
|  |  |
July Spectacular Super Series - Seminole, July 10, 2004
 USTA National Clay Court Chmps - Greensb, July 18, 2004
 North Florida Designated BG18-10 - Talla, July 24, 2004
 USTA Zone Team Chmps - Nashville, TN, July 28, 2004
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | RR | Loss | Alex Doleac | | 7-6(3)); 4-6; 7-6(4)) | | RR | Win | Aaron Hoffman | + | 6-4; 6-3 | | RR | Win | Yale Goldberg | 445 | 6-2; 6-2 | | RR | Loss | Will Suk | 164 | 7-5; 6-2 |
|  |  |
1st Coast Tennis Foundation Designated -, August 14, 2004
 Miami Dade Junior Designated - Labor Day, September 4, 2004
 Orange County Fall Sectional BG12 - Orla, October 9, 2004
 Saddlebrook Super Series - Wesley Chapel, October 23, 2004
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 32 | Loss | Alex Peckham | | 6-1; 6-3 |
|  |  |
North Miami Bch Boy's 12's Designated -, November 13, 2004
 USTA National Opens - Orlando, FL, November 25, 2004
 Eddie Herr International - 18 & Under, November 26, 2004
 Player's International Designated BG14,1, December 11, 2004
 Jr Orange Bowl 43rd Intl. Tennis Champs, December 14, 2004
 USTA National Winter Championships, December 27, 2004
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 128 | Loss | Joseph DiGiulio | 66 | 6-3; 6-0 | | 1-W | Win | Joseph Fiorillo | | 6-0; 6-0 | | 2-W | Win | Jeffrey Offerdahl | 180 | 7-6(5); 3-6; 6-3 | | 3-W | Loss | Matthew Westmoreland | | 6-1; 4-6; 10-6 |
|  |  |
+ Strong win over an ineligible player. * The ranking calculation does not count this match.
| |  |  | |