| |  | 
  | |  |
 |  |  | | Derek Klein |  | | Residence: | San Diego, CA |
| Birthplace: | Unknown | | Age: | Unknown | | Height: | Unknown | | Plays: | Unknown | | Coaching: | Unknown |  | | Complete Bio | |
USTA Regional Tourn., January 22, 2011
 66th Fullerton Jr. Tourn., January 29, 2011
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 128 | Loss | Dante Saleh | 129 | 6-4; 6-3 |
|  |  |
30th Woody Hunt Mem. South Bay Tourn., February 12, 2011
 55th Long Beach Jr. Tourn., March 5, 2011
 77th Harper Ink Mem. Tourn., March 19, 2011
 Anaheim TC Open Tourn., April 30, 2011
 CIF San Diego Boys' Indiv. Chmps., May 16, 2011
 Esme Pearson Memorial Tourn., May 21, 2011
 96th Santa Barbara Summer Tourn., June 4, 2011
 109th So. CA Sectional Chmps., June 18, 2011
 USTA Regional Tourn. (Sacramento), July 9, 2011
 USTA B18-16 National Clay Court Chmps., July 17, 2011
 3rd Jim Buck Team BG18-16, August 26, 2011
 USTA Regional Tourn. (Carmel), September 3, 2011
 27th Los Caballeros Jr., September 10, 2011
 The Orange Co./JP Yamasaki Open, October 8, 2011
 USTA Regional Tourn. (Palm Desert), October 29, 2011
 + Strong win over an ineligible player. * The ranking calculation does not count this match.
| |  |  | |