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 |  |  | | William Koehrsen |  | | Residence: | East Peoria, IL |
| Birthplace: | Unknown | | Age: | Unknown | | Height: | Unknown | | Plays: | Unknown | | Coaching: | Unknown |  | | Complete Bio | |
USTA Midwest B18 Team Cup, June 15, 2012
 USTA/Midwest BG18-16 Closed Chmps., June 23, 2012
 91st Cen. IL Open BG18-16 L5, July 7, 2012
 USTA/Midwest BG18-12 L4, August 4, 2012
 Keegan Bannon Memorial Open L6, December 7, 2012
 Rush-Copley Holiday Open L6, December 14, 2012
 John F. Hennessey Open, December 27, 2012
 USTA Midwest L4 Tourn. B18, January 5, 2013
 USTA Midwest L4 Tourn., February 2, 2013
 USTA Midwest L3 Tourn., February 16, 2013
 USTA Midwest B18 March Des. Series, March 2, 2013
 USTA Midwest B16 March Des. Series, March 9, 2013
 MSITA Closed Midwest Qualifier, May 31, 2013
 * The ranking calculation does not count this match.
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