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 |  |  | | Declan Hahn |  | | Residence: | Bryn Mawr, PA |
| Birthplace: | Unknown | | Age: | Unknown | | Height: | Unknown | | Plays: | Unknown | | Coaching: | Unknown |  | | Complete Bio | |
L4 Sectional Tourn. @ Atlantic Club, January 8, 2010
 USTA National Open, February 13, 2010
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 64 | Loss | Joshua Cogan | 128 | 6-1; 6-3 | | 1 | Loss | Bas Van Lent | | 5-7; 6-4; 7-6(5) |
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Tennis Club Spring Open SR L5, March 5, 2010
 L4 Sectional Tourn. B16, March 19, 2010
 Riverside B18 Open SR L6, April 2, 2010
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 16 | Win | Ben Levitt | | 6-1; 6-0 | | Q | Loss | Vinit Palayekar | | 6-1; 6-1 |
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AAYTE BG16 Tourn., May 28, 2010
 L3 Sectional Chmp. BG16, June 19, 2010
 L3 Sectional Chmp. B18, June 26, 2010
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 64 | Loss | Vinit Palayekar | | 6-4; 6-3 | | 1 | Loss | Christopher Seitz | 359 | 6-1; 6-3 |
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USTA National Opens, July 3, 2010
 Zone Team BG16 - St Louis, July 28, 2010
 L4 Sectional Tourn. @ Birchwood, September 3, 2010
 Fox Chase B16 Classic SR L5, September 17, 2010
 Atlantic Club B18 Open XIV SR L5, October 1, 2010
 * The ranking calculation does not count this match.
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