2018 Nielsen Pro Tennis Championship

The 2018 Nielsen Pro Tennis Championship was a professional tennis tournament played on hard courts. It was the 27th edition of the tournament which was part of the 2018 ATP Challenger Tour. It took place in Winnetka, Illinois, between 9 and 14 July 2018.

Seeds

 * 1 Rankings are as of July 2, 2018.

Other entrants
The following players received wildcards into the singles main draw:
 * 🇺🇸 Tom Fawcett
 * 🇺🇸 Martin Joyce
 * 🇺🇸 Thai-Son Kwiatkowski
 * 🇺🇸 Danny Thomas

The following players received entry into the singles main draw using protected rankings:
 * 🇫🇷 Tom Jomby
 * 🇺🇸 Nicolas Meister

The following players received entry from the qualifying draw:
 * 🇺🇸 Collin Altamirano
 * 🇹🇳 Aziz Dougaz
 * 🇧🇮 Guy Orly Iradukunda
 * 🇺🇸 Martin Redlicki

Singles

 * 🇷🇺 Evgeny Karlovskiy def. Jason Jung 6–3, 6–2.

Doubles

 * 🇺🇸 Austin Krajicek / 🇮🇳 Jeevan Nedunchezhiyan def. 🇻🇪 Roberto Maytín / Christopher Rungkat 6–7(4–7), 6–4, [10–5].