| |  | 
  | |  |
 |  |  | | Isaiah Mayerchak |  | | Residence: | Princeton, MN |
| Birthplace: | Unknown | | Age: | Unknown | | Height: | Unknown | | Plays: | Unknown | | Coaching: | Unknown |  | | Complete Bio | |
USTA Northern B18-12 Sectional, June 13, 2011
 USTA Intersectional Team, July 10, 2011
 USTA BG16 Zonals - Waco, July 27, 2011
 USTA National BG18-16 Chmps., August 5, 2011
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 256 | Loss | David Wilczynski | 86 | 6-0; 6-1 | | 2 | Loss | Trevor Gotkowski | | 6-0; 6-1 |
|  |  |
USTA Regional Tourn. (Rapid City), September 3, 2011
 GUSTAvus Fall Classic, October 21, 2011
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 16 | Win | Dobby O'Donnell | | 6-2; 6-1 | | Q | Loss | Charlie Adams | 290 | 2-6; 7-5; 6-4 | | CQ | Loss | Mitchell Brandell | | Wo (inj)WoJ* |
|  |  |
USTA Regional Tourn. (St. Louis), October 29, 2011
 LTF Fall Chmps. B18-12, November 4, 2011
 USTA National Open, November 25, 2011
 Baseline TC Indoor Chmps. BG16,12, December 2, 2011
 RAC Blizzard Classic, January 13, 2012
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 16 | Win | Matthew Delmastro | | 6-4; 6-2 | | Q | Loss | Elliott Sprecher | 50 | 6-3; 6-1 | | CQ | Win | Kavir Kumar | 517 | 4-6; 6-1; 10-7 | | CS | Loss | Brian Utz | | 6-2; 7-5 |
|  |  |
USTA Regional Tourn. (Waco), January 21, 2012
 Pepsi Championships L5, February 17, 2012
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 16 | Loss | Jordan Feige | | Wd (ill)WI* |
|  |  |
* The ranking calculation does not count this match.
| |  |  | |