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 |  |  | | Tony Kostadinov |  | | Residence: | La Grange, IL |
| Birthplace: | Unknown | | Age: | Unknown | | Height: | Unknown | | Plays: | Unknown | | Coaching: | Unknown |  | | Complete Bio | |
Midwest B18 Closed Indoor Chmp., February 5, 2011
 Wisconsin B18-16 Indoor Chmps., February 11, 2011
 Western Michigan Indoor B18, February 19, 2011
 Midwest B18 Designated, March 5, 2011
 USTA ITF Claremont, March 28, 2011
 USTA International Spring Chmps., April 2, 2011
 Daytona Beach ITF, May 2, 2011
 Plantation ITF, May 9, 2011
 Delray Beach ITF, May 16, 2011
 Court One Memorial Classic, May 28, 2011
 Chicago Dst. Chmp., June 10, 2011
 Midwest Closed BG18,16 Chmp., June 25, 2011
 USTA Regional Tourn. (Ft. Myers), July 9, 2011
 USTA B18-16 National Clay Court Chmps., July 17, 2011
 USTA International Hard Court, August 22, 2011
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 32 | Loss | Yuanfeng Li | 82 | 6-3; 6-1 |
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USTA Regional Tourn. (Kalamazoo), September 3, 2011
 Kentucky International Tennis Derby, September 12, 2011
 Waco ITF, September 26, 2011
 Wichita Falls ITF, October 3, 2011
 Aurora Boy's Challenger, October 8, 2011
 Atlanta ITF, October 24, 2011
 South Carolina ITF, October 31, 2011
 Evert American ITF, November 7, 2011
 Midwest B18 Fall Closed Chmps., November 12, 2011
 * The ranking calculation does not count this match.
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