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 |  |  | | Chas Mayer |  | | Residence: | Wilmette, IL |
| Birthplace: | Unknown | | Age: | Unknown | | Height: | Unknown | | Plays: | Unknown | | Coaching: | Unknown |  | | Complete Bio | |
College Park New Year's Open BG18-14 L6, January 2, 2009
 Five Seasons NB B16 Winter Cup L6, January 16, 2009
 Midwest B14 Closed Indoor Chmp., January 31, 2009
 Wisconsin BG14 Indoor Chmps., February 13, 2009
 Midwest B14 Des. March Series, March 14, 2009
 USTA National Opens, May 16, 2009
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 64 | Loss | David Parker | 110 | 6-0; 6-1 | | 1 | Loss | Kristoff Saari | | 6-1; 6-1 |
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Court One Memorial Classic, May 23, 2009
 Libertyville Challenger L6, June 5, 2009
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 32 | Win | Sancheev Ravichandran | | 6-1; 6-0 | | 16 | Win | Evan Ruda | | 6-1; 6-2 | | Q | Loss | Brian Kim | | 6-3; 7-5 |
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Chicago Dst. Qualifier L4, June 12, 2009
 Midwest Closed BG14,12 Chmp., June 27, 2009
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 128 | Loss | Luke Sanderson | 743 | 7-5; 6-3 | | 1 | Win | Nathan Cavanaugh | | 6-1; 7-6(3) | | 2 | Loss | Billy Heckman | | 6-3; 6-0 |
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USTA National Opens, July 4, 2009
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 64 | Win | Aaron Sandberg | 726 | 2-6; 6-4; 6-4 | | 32 | Loss | Edward Covalschi | | 6-0; 6-0 | | 2 | Loss | Vincent Lin | 463 | 6-2; 7-6(4) |
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Midwest Open Chmps. B14, July 12, 2009
 DCC Midwest L5, July 31, 2009
 Ann Arbor Jr. Open, August 3, 2009
 College Park Labor Day Open L6, September 4, 2009
 Northwestern Fall Challenger L6, September 11, 2009
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | 16 | Win | Ronnie Lorenzini | 981 | Def (late)DP* | | Q | Loss | Nathan Jacobson | | 6-3; 6-1 |
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Kentucky Int'l Tennis Derby, September 19, 2009
 Aurora B18-14 Challenger, October 10, 2009
 Midwest B14 Indoor Open, October 31, 2009
 Midwest Fall Closed Chmps., November 14, 2009
 * The ranking calculation does not count this match.
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