The 2017 Nielsen Pro Tennis Championship was a professional tennis tournament played on hard courts. It was the 26th edition of the tournament which was part of the 2017 ATP Challenger Tour. It took place in Winnetka, Illinois, between 11 and 16 July 2017.
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
| Tennys Sandgren | 106 | 1 | ||
| Taylor Fritz | 128 | 2 | ||
| Dennis Novikov | 175 | 3 | ||
| Marco Chiudinelli | 183 | 4 | ||
 India | Ramkumar Ramanathan | 184 | 5 | |
| Michael Mmoh | 185 | 6 | ||
| Mitchell Krueger | 189 | 7 | ||
| Denis Kudla | 191 | 8 |
The following players received wildcards into the singles main draw:
The following players received entry into the singles main draw using protected rankings:
The following players received entry into the singles main draw as alternates:
The following players received entry from the qualifying draw:
Aron Hiltzik Dennis Nevolo Martin Redlicki Logan SmithSee main article: 2017 Nielsen Pro Tennis Championship – singles.
Akira Santillan def. Ramkumar Ramanathan 7–6(7–1), 6–2.See main article: 2017 Nielsen Pro Tennis Championship – doubles.
Sanchai Ratiwatana / Christopher Rungkat def. Kevin King / Bradley Klahn 7–6(7–4), 6–2.