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 |  |  | | Jonathan Poon |  | | Residence: | Rcho Sta Marg, CA |
| Birthplace: | Unknown | | Age: | Unknown | | Height: | Unknown | | Plays: | Unknown | | Coaching: | Unknown |  | | Complete Bio | |
USTA National Winter Chmps., December 27, 2008
 58th Gene Jung Whittier Midwinter, January 17, 2009
 64th Fullerton Jr. Tourn., January 31, 2009
 USTA National Opens, February 14, 2009
 28th Woody Hunt Mem. South Bay Tourn., February 28, 2009
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 256 | Win | Nicholas Brown | | 6-2; 6-1 | | 128 | Loss | Warren Wood | 85 | 6-4; 6-1 |
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USTA International Spring Chmps., April 6, 2009
 The Easter Bowl Spring Nat'l, April 12, 2009
 109th Ojai Valley Tourn., April 23, 2009
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 64 | Win | Mitchell Paul | | 6-0; 6-0 | | 32 | Loss | Parker Kelley | | 6-4; 3-6; 6-4 |
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25th Anaheim TC Tourn., May 2, 2009
 USTA National Opens, May 16, 2009
 Quiksilver Jr. Chmps., May 23, 2009
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 64 | Loss | Nicolas Cummins | | 6-1; 1-6; 10-4 | | 1 | Loss | Blake Eggleston | | 6-3; 3-6; 11-9 |
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107th SoCal Sectional Chmps., June 20, 2009
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 512 | Win | Matthew Brown | | 6-2; 6-1 | | 256 | Loss | Cameron Bernhardt | 217 | 6-2; 2-6; 6-3 |
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West Coast Chmps., August 3, 2009
 25th Los Caballeros Jr., September 12, 2009
 46th Northridge-Matador Tourn., September 26, 2009
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 128 | Win | Richard Cheng | 3141 | Wd (emerg)WI* | | 64 | Loss | Brandon Beardsley | | 6-2; 6-4 |
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Dunlop Jr. Chmps., October 10, 2009
 The Orange County Jr. Open, October 24, 2009
 California Bowl, December 19, 2009
 * The ranking calculation does not count this match.
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