| |  | 
  | |  |
 |  |  | | John Betrus |  | | Residence: | Fort Gratiot, MI |
| Birthplace: | Unknown | | Age: | Unknown | | Height: | Unknown | | Plays: | Unknown | | Coaching: | Unknown |  | | Complete Bio | |
Grosse Pointe HC B18-12 New Year Classic, January 22, 2010
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | Q | Loss | Griffin Mertz | | Wd (ill)WI* | | CS | Loss | Gage Feldeisen | 1278 | Wd (ill)WI* |
|  |  |
Deer Lake Spring Open, March 12, 2010
 Port Huron Tennis House Open, March 26, 2010
 S.E. Michigan Dst. Muthig Jr. Qualifier, May 28, 2010
 Jule Kovar Memorial Open, August 14, 2010
 * The ranking calculation does not count this match.
| |  |  | |