| |  | 
  | |  |
 |  |  | | Jonathan Yaffe |  | | Residence: | Beverly Hills, CA |
| Birthplace: | Unknown | | Age: | Unknown | | Height: | Unknown | | Plays: | Unknown | | Coaching: | Unknown |  | | Complete Bio | |
16th West Coast Jr. Open & Sat. Tourn., May 26, 2012
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 64 | Loss | KarthikPraveen Nair | | 6-1; 6-2 |
|  |  |
12th West Coast Tennis South Bay Open, June 2, 2012
 110th So. California Sectional Chmps., June 16, 2012
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 256 | Win | Dane Keith | | 6-3; 6-4 | | 128 | Loss | Michael Bott | 215 | 6-1; 6-0 |
|  |  |
23rd The Tennis Club Jr. Open Tourn., July 9, 2012
 Pacific TC Summer Jr. Open Tourn., July 16, 2012
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 32 | Loss | Kevin Ha | 476 | 6-1; 6-1 |
|  |  |
So. California Summer Open / Satellite, July 23, 2012
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 16 | Loss | Kevin Ha | 476 | 6-2; 6-3 |
|  |  |
30th Northridge Jr. Open Tourn., July 30, 2012
 Long Beach Jr. Open, August 13, 2012
 34th Racquet Centre Jr. Open Tourn., August 18, 2012
 83rd Santa Monica Jr. Open & Satellite, August 20, 2012
 14th Ramada TC Jr. Open Tourn., September 1, 2012
 28th Los Caballeros Jr. Open Tourn., September 8, 2012
 49th Northridge-Matador Jr. Open Tourn., September 22, 2012
 West Coast Tennis South Bay Fall Open, October 13, 2012
 68th Itennis Rose Bowl Jr. Chmps., October 20, 2012
 23rd Calabasas Jr. Open Tourn., November 2, 2012
 The SoCal Jr. Chmps., November 17, 2012
 Rancho Cienega Tennis Shop Jr. Open Tour, November 23, 2012
 49th Annual Anaheim Jr. Tourn., December 1, 2012
 Lakewood Open & Satellite Tourn., December 8, 2012
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 64 | Loss | Manav Gandhi | | Wd (emerg)WI* |
|  |  |
Homer Peabody Holiday Jr. Open Tourn., December 8, 2012
 9th Yes Foundation Winter Jr. Open, January 5, 2013
 62nd Gene Jung Whittier Midwinter Tourn., January 19, 2013
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 128 | Loss | John Freer | 587 | 6-3; 6-4 |
|  |  |
28th Santa Barbara City Jr. Tourn., January 26, 2013
 68th Annual Fullerton Jr. Tourn., February 2, 2013
 4th Cerritos Reg. Park Open Tourn., February 16, 2013
 32nd Woody Hunt Mem. South Bay Tourn., February 23, 2013
 56th Long Beach Jr. Tourn., March 9, 2013
 26th San Gabriel Valley Open, April 6, 2013
 29th Anaheim TC Spring Open Tourn., April 27, 2013
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 128 | Loss | Ryan Nuno | 187 | 6-2; 6-2 |
|  |  |
34th Lakewood Spring Jr. Open Tourn., May 4, 2013
 + Strong win over an ineligible player. * The ranking calculation does not count this match.
| |  |  | |