The 2011 Nielsen Pro Tennis Championship was a professional tennis tournament played on hard courts. It was the 20th edition of the tournament which was part of the 2011 ATP Challenger Tour. It took place in Winnetka, Illinois, between June 26 and July 3, 2011.
ATP entrants
Seeds
1 Rankings are as of June 20, 2011.
Other entrants
The following players received wildcards into the singles main draw: James Blake Robby Ginepri Evan King Jack Sock
The following players received entry as a special exempt into the singles main draw: Pierre-Ludovic Duclos
The following players received entry from the qualifying draw: Luka Gregorc Bradley Klahn Denis Kudla Michael Shabaz
Champions
Singles
James Blake def. Bobby Reynolds, 6–3, 6–1
Doubles
Treat Conrad Huey / Bobby Reynolds def. Jordan Kerr / Travis Parrott, 7–6(9–7), 6–4