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 |  |  | | Matthew Siow (USA) |  | | Residence: | Anaheim, 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
 USTA International Spring Chmps., April 6, 2009
 The Easter Bowl ITF BG18 Chmps., April 13, 2009
 109th Ojai Valley Tourn., April 23, 2009
 USTA National Opens, May 16, 2009
 107th SoCal Sectional Chmps., June 20, 2009
 USTA National BG18-16 Chmps., August 7, 2009
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 256 | Win | Jeffrey Mullen | | 6-2; 6-7(5); 6-2 | | 128 | Loss | Benjamin Chen | 26 | 6-1; 6-3 | | 2 | Win | Christoper Cox | 216 | 6-2; 6-3 | | 3Q | Loss | Daniel Whitehead | | 6-4; 3-6; 7-6(1) |
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* The ranking calculation does not count this match.
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