| |  | 
  | |  |
 |  |  | | Stefan Hein |  | | Residence: | Olney, CO |
| Birthplace: | Unknown | | Age: | Unknown | | Height: | Unknown | | Plays: | Unknown | | Coaching: | Unknown |  | | Complete Bio | |
USTA MAS B16 Challenger #3, May 19, 2012
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 64 | Loss | Ryan Kros | 503 | 6-2; 6-4 |
|  |  |
Mall Annual Jr. Tourn., May 26, 2012
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 32 | Loss | Jason Kwak | 793 | 6-3; 6-0 |
|  |  |
Georgetown Prep Jr. Open L3, June 2, 2012
 USTA MAS Championship #3, June 19, 2012
 American University Jr. Open #1, June 30, 2012
 USTA MAS B14 Challenger #4, July 7, 2012
 Maryland Jr. Outdoor Chmps., July 28, 2012
 USTA MAS B14 Challenger #5, August 18, 2012
 Anaquash Jr. Open #1, August 25, 2012
 USTA MAS B14 Challenger #6 L2, September 8, 2012
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 64 | Loss | Samuel Coan | 1033 | 6-4; 6-2 |
|  |  |
McDonogh Jr. Open L3, September 22, 2012
 West Winds Jr. Indoor Satellite #18 L4, November 2, 2012
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | Q | Loss | Pascal Lee | 1385 | 6-3; 6-1 |
|  |  |
USTA MAS B14 Challenger #8, December 1, 2012
 Ken Guendel Mem. Holiday Classic L3, December 26, 2012
 William & Mary Jr. Winter Series #5 L4, January 25, 2013
 Sarver Tennis President's L3, February 8, 2013
 USTA MAS B14 Challenger #1, February 16, 2013
 USTA MAS B14 Chmp. #2, March 2, 2013
 West Winds Jr. Indoor Satellite #9 L4, March 15, 2013
 Woodholme Spring Jr. Open L4, April 19, 2013
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 16 | Loss | Avery Zuber | | 7-5; 6-3 | | Q | Loss | Richard Bell | 999 | 6-2; 6-2 |
|  |  |
USTA MAS Challenger #2 B14, April 27, 2013
 Maryland State Indoor BG14 Chmps., May 3, 2013
 * The ranking calculation does not count this match.
| |  |  | |