Matthew Siow
| Division | 18 |
| Home Town | Irvine, CA |
| USTA Section | Southern California (SCTA) |
| Singles Line | 23 |
| Singles Seed | 0 |
| Doubles Line | 13 |
| Doubles Seed | 0 |
2009
Boys 18 Doubles
Main Draw
| Round | Players | Final Score |
|---|---|---|
| 1st Rd | Bye | Automatic Advance |
| 2nd Rd | Daniel Kosakowski / Matthew Siow def. Chris Cooprider / Matthew Spindler | 6-4, 6-2 |
| 3rd Rd | Daniel Kosakowski / Matthew Siow def. Harry Fowler / Frederick Saba (9) | Wo(inj) |
| 4th Rd | Daniel Nguyen / JT Sundling (1) def. Daniel Kosakowski / Matthew Siow | 6-1, 6-1 |
Boys 18 Singles
Main Draw
| Round | Players | Final Score |
|---|---|---|
| 1st Rd | Matthew Siow def. Jeffrey Mullen | 6-2, 6-7(5), 6-2 |
| 2nd Rd | Benjamin Chen def. Matthew Siow | 6-1, 6-3 |
Feed-In
| Round | Players | Final Score |
|---|---|---|
| 2nd Rd | Matthew Siow def. Christopher Cox | 6-2, 6-3 |
| 3rd Rd Qualifying | Daniel Whitehead def. Matthew Siow | 6-4, 3-6, 7-6(1) |
2008
Boys 18 Singles
Main Draw
| Round | Players | Final Score |
|---|---|---|
| 1st Rd | Matthew Siow def. Will Reynolds | 3-6, 7-6(4), 7-5 |
| 2nd Rd | Marc Powers (28) def. Matthew Siow | 6-2, 6-1 |
Feed-In
| Round | Players | Final Score |
|---|---|---|
| 2nd Rd | Maximilien Ando Hirsh def. Matthew Siow | 6-2, 6-4 |
Boys 18 Doubles
Main Draw
| Round | Players | Final Score |
|---|---|---|
| 1st Rd | Nathan Robinson / Bryan Welnetz def. Conor Berg / Matthew Siow | 3-6, 6-3, 6-4 |
2007
Boys 16 Doubles
Main Draw
| Round | Players | Final Score |
|---|---|---|
| 1st Rd | Jeremy Quiroz / Matthew Siow def. Tyler Droll / Anderson Walls | 7-5, 7-6(5) |
| 2nd Rd | Matthew Kandath / Robert Wong (12) def. Jeremy Quiroz / Matthew Siow | 6-1, 6-0 |
Boys 16 Singles
Feed-In
| Round | Players | Final Score |
|---|---|---|
| 1st Rd | Bye | Automatic Advance |
| 2nd Rd | Matthew Siow def. Chris Camillone (17) | 6-2, 6-3 |
| 3rd Rd Qualifying | Matthew Siow def. Christopher Freeman | 6-3, 6-1 |
| 3rd Rd | Matthew Siow def. Ben Hoogland | 3-6, 7-6(3), 6-1 |
| 4th Rd Qualifying | Matthew Siow def. Robert Wong | 6-4, 6-2 |
| 4th Rd | Daniel Whitehead def. Matthew Siow | 7-6(5), 6-3 |
Main Draw
| Round | Players | Final Score |
|---|---|---|
| 1st Rd | Tyler Droll def. Matthew Siow | 1-6, 7-6(5), 6-4 |
2006
Boys 16 Doubles
Main Draw
| Round | Players | Final Score |
|---|---|---|
| 1st Rd | Mousheg Hovhannisyan / Matthew Siow def. Jordan Bridge / Spencer Smith | 6-4, 6-3 |
| 2nd Rd | Drew Daniel / Kayvon Karimi (11) def. Mousheg Hovhannisyan / Matthew Siow | 6-4, 6-2 |
Boys 16 Singles
Main Draw
| Round | Players | Final Score |
|---|---|---|
| 1st Rd | Matthew Siow def. Rajeev Deb-Sen | 6-2, 7-6(2) |
| 2nd Rd | Kayvon Karimi (14) def. Matthew Siow | 6-2, 6-4 |
Feed-In
| Round | Players | Final Score |
|---|---|---|
| 2nd Rd | Matthew Siow def. Eric West | 6-4, 6-4 |
| 3rd Rd Qualifying | Matthew Spindler def. Matthew Siow | 6-3, 6-2 |