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 |  |  | | Nicolas Welker |  | | Residence: | Elgin, IL |
| Birthplace: | Unknown | | Age: | Unknown | | Height: | Unknown | | Plays: | Unknown | | Coaching: | Unknown |  | | Complete Bio | |
USTA/Midwest B12 L4 Tourn., February 4, 2012
 Lockport March Open L6, March 2, 2012
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 16 | Win | Martin Matov | 565 | 6-1; 6-3 | | Q | Win | Daniel Costa | | Wo (admin)WoJ* | | S | Loss | Michal Wolan | 293 | 6-0; 3-6; 10-6 |
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USTA/Midwest Section L4 Tourn., March 10, 2012
 FCTC April Showers Jr. Open, April 13, 2012
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 16 | Win | Alexander Winters | | 6-2; 6-1 | | Q | Loss | Alexander Vinarov | | 6-4; 6-1 |
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USTA/Midwest Section B12 L5, May 5, 2012
 USTA/Midwest L3 Memorial Day, May 26, 2012
 Northern Illinois District Qualifier, June 1, 2012
 USTA Midwest BG12 Team Cup, June 15, 2012
 Midwest Closed BG14-12 Chmps., June 23, 2012
 USTA/Midwest B12 Open Chmp., July 21, 2012
 USTA/Midwest Section L5 Tourn., July 28, 2012
 USTA B12 National Chmps., August 5, 2012
 USTA Regional Tourn. (Kalamazoo), September 1, 2012
 Forest View Summer Finale L6, September 14, 2012
 NSRC Fall B14 Singles L6, September 28, 2012
 FCTC Fall Classic Jr. Tennis Open L6, October 5, 2012
 Rush-Copley October Classic - Midwest Le, October 19, 2012
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 16 | Win | Thomas Chavez | | 6-2; 6-0 | | Q | Loss | Nicholas Kovach | | 6-2; 6-3 |
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The Clubs at River City Halloween Open, October 26, 2012
 CCAC B16-14 Singles L6, November 2, 2012
 Wildcat Winter Challenger L6, November 30, 2012
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 16 | Win | William Coburn | | 6-3; 6-1 | | Q | Loss | Ryan Yoo | | 6-4; 6-3 |
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USTA Midwest Section Winter Chmps., December 27, 2012
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 64 | Win | Chase Garber | | 6-2; 7-6(1) | | 32 | Loss | Kevin Yu | | 6-2; 6-2 | | 3Q | Loss | Christopher Maltby | 172 | 6-1; 6-1 |
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Rush Copley Jan. Classic L6, January 11, 2013
 * The ranking calculation does not count this match.
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