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 |  |  | | William Macarthur |  | | Residence: | Gaithersburg, MD |
| Birthplace: | Unknown | | Age: | Unknown | | Height: | Unknown | | Plays: | Unknown | | Coaching: | Unknown |  | | Complete Bio | |
West Winds Jr. Indoor Sat. #15 L5, April 9, 2010
  |  |  Rnd |  Result |  Opponent |  Rank |  Score | | Q | Loss | Alex Hahn | 578 | 6-2; 6-4 |
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Mall Annual Jr. Tourn., May 29, 2010
 USTA MAS BG18-16 Chmp. #3, June 18, 2010
 Dst. of Columbia Jr. Open L3, July 8, 2010
 The Columbia Jr. Open L3, July 19, 2010
 Maryland Jr. Outdoor Chmps., July 31, 2010
 Ken Guendel Mem. Holiday Classic L3, December 26, 2010
 * The ranking calculation does not count this match.
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