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 |  |  | | Nathan Griffin |  | | Residence: | Broadview Heights, OH |
| Birthplace: | Unknown | | Age: | Unknown | | Height: | Unknown | | Plays: | Unknown | | Coaching: | Unknown |  | | Complete Bio | |
NEOTA MW Qualifier Pattison Chmps., June 2, 2012
 USTA/Midwest BG18-16 Closed Chmps., June 23, 2012
 USTA/Midwest B16 Open Chmps., July 21, 2012
 USTA Regional Tourn. (Kalamazoo), September 1, 2012
 USTA Midwest Section B18-16 L5, September 15, 2012
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 32 | Win | Matthew Santen | | 6-4; 6-3 | | 16 | Win | Jasper Koenen | + | 0-6; 6-1; 1-0(7) | | Q | Win | Connor O'Kelly | | 6-0; 4-6; 1-0(7) | | S | Loss | Luke Sanderson | | 6-3; 6-1 | | PL | Win | Ryan Massinople | | 7-5; 7-6(5) |
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USTA Regional Tourn. (Grand Blanc), October 27, 2012
 USTA Midwest L1 Fall Closed Chmps., November 10, 2012
 USTA Midwest Dec. Designated B16, December 8, 2012
 USTA National Winter Chmps., December 27, 2012
 USTA Midwest L2 Jan. Des. Series B18, January 5, 2013
 USTA Midwest L1 Indoor Closed, February 16, 2013
 USTA Midwest L4 Tourn., March 2, 2013
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 32 | Win | Grant Reiman | | 7-5; 6-1 | | 16 | Win | Zachary Phillips | | 6-0; 6-2 | | Q | Win | Ben Vandixhorn | 383 | 6-4; 6-3 | | S | Win | Jeffrey Melvin | | 6-3; 6-4 | | F | Win | Matthew Hamilton | | 6-1; 6-2 |
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USTA Midwest B16 March Des. Series, March 9, 2013
 + Strong win over an ineligible player. * The ranking calculation does not count this match.
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