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 |  |  | | Yuki Muramatsu |  | | Residence: | Bradenton, FL |
| Birthplace: | Unknown | | Age: | Unknown | | Height: | Unknown | | Plays: | Unknown | | Coaching: | Unknown |  | | Complete Bio | |
Eddie Herr 2008, November 28, 2008
 47th Jr. Orange Bowl Chmps., December 17, 2008
 Bollettieri Jr. Chmps., January 24, 2009
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 16 | Win | Sam Johnson | | 6-0; 6-0 | | Q | Win | Jason Shkodnik | | 6-1Ret (inj)RJ | | S | Win | Oliver Benneweis-Pramming | + | 6-3; 7-5 | | F | Loss | Pedro Gonzalez | | 3-6; 6-3; 6-1 |
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International Junior Open Club Casablanc, February 9, 2009
 Jalisco Junior Cup 2009, February 16, 2009
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 64 | Win | John Woodard | + | 6-3; 6-4 | | 32 | Loss | Alexis Carlos | | 6-3; 6-3 |
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La Libertad Junior Open, February 23, 2009
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 64 | Win | Rudy Richter | | 6-2; 6-1 | | 32 | Loss | Felipe Nino | | 1-6; 7-6(7); 6-3 |
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College Station ITF, March 30, 2009
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 64 | Win | Ryan Cheung | + | 6-4; 6-3 | | 32 | Loss | Chase Curry | | 6-1; 3-6; 6-0 |
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27th All Canadian ITF Junior Championshi, April 14, 2009
 Copa Cariari, May 25, 2009
 Security & General International Junior, June 22, 2009
 Tihta 2009, June 29, 2009
 2009 U18 ITF World Ranking Event, September 28, 2009
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 32 | Win | Hugo Di Feo | | 6-3; 7-5 | | 16 | Loss | Alexander Petrone | | 6-1; 6-1 |
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IBM ITF Junior Circuit 2009, October 12, 2009
 Evert American ITF Junior Circuit, November 9, 2009
 + Strong win over an ineligible player. * The ranking calculation does not count this match.
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