The 2013 Nielsen Pro Tennis Championship was a professional tennis tournament played on hard courts. It was the 22nd edition of the tournament which was part of the 2013 ATP Challenger Tour. It took place in Winnetka, Illinois, between 1 and 7 July 2013.

Singles main-draw entrants

Seeds

CountryPlayerRank1Seed
RUSAlex Bogomolov Jr.811
USASteve Johnson982
USAJack Sock1023
USATim Smyczek1204
INDSomdev Devvarman1365
GERMischa Zverev1456
USADonald Young1547
USABradley Klahn1788
  • 1 Rankings are as of June 24, 2013.

Other entrants

The following players received wildcards into the singles main draw:

The following players received entry as an alternate into the singles main draw:

The following players received entry from the qualifying draw:

Champions

Singles

Doubles

External links