2019 Nielsen Pro Tennis Championship
Date	8–14 July
Edition	28th
Surface	Hard
Location	Winnetka, Illinois, United States
Champions
Singles
Bradley Klahn
Doubles
JC Aragone / Bradley Klahn
← 2018 · Nielsen Pro Tennis Championship · 2020 →

The 2019 Nielsen Pro Tennis Championship was a professional tennis tournament played on hard courts. It was the 28th edition of the tournament which was part of the 2019 ATP Challenger Tour. It took place in Winnetka, Illinois, between 8 and 14 July 2019.

Country	Player	Rank1	Seed
USA	Bradley Klahn	87	1
AUS	Matthew Ebden	95	2
ARG	Guido Andreozzi	114	3
UZB	Denis Istomin	115	4
TPE	Jason Jung	117	5
USA	Bjorn Fratangelo	133	6
ESP	Adrián Menéndez Maceiras	146	7
IND	Ramkumar Ramanathan	151	8
USA	Michael Mmoh	152	9
FRA	Quentin Halys	157	10
USA	Mitchell Krueger	183	11
AUS	Jason Kubler	188	12
AUS	Thanasi Kokkinakis	192	13
USA	Christopher Eubanks	193	14
USA	Donald Young	197	15
USA	Thai-Son Kwiatkowski	205	16

• ¹ Rankings are as of July 1, 2019.^[1]

The following players received wildcards into the singles main draw:

• Stefan Dostanic
• Bjorn Fratangelo
• Denis Istomin
• Sam Riffice
• Alex Rybakov

The following player received entry into the singles main draw using a protected ranking:

• Maximilian Neuchrist

The following players received entry into the singles main draw using their ITF World Tennis Ranking:

• Jordi Arconada
• Sekou Bangoura
• Aziz Dougaz
• Michail Pervolarakis
• Martin Redlicki

The following players received entry from the qualifying draw:

• Felix Corwin
• John McNally

• Bradley Klahn def. Jason Kubler 6–2, 7–5.

• JC Aragone / Bradley Klahn def. Christopher Eubanks / Thai-Son Kwiatkowski 7–5, 6–4.