The Nielsen Pro Tennis Championship is a tennis tournament held intermittently in Winnetka, Illinois, USA since 1984. The event is part of the ATP Challenger Tour and is played on outdoor hard courts at the A. C. Nielsen Tennis Center, a facility owned and operated by the Winnetka Park District.

Past finals

Singles

Year	Champion	Runner-up	Score
1984	Marc Flur	Mike Leach	6–3, 6–4
1985	Barry Moir	Harold Solomon	2–6, 7–5, 6–2
1986	not held
1987	Simon Youl	Roberto Saad	5–7, 7–6, 6–3
1988	Jeff Tarango	Gianluca Pozzi	7–5, 5–7, 6–2
1989	Brian Garrow	Todd Martin	6–4, 6–2
1990	Cristiano Caratti	Chris Garner	7–6, 6–1
1991	Byron Black	Todd Martin	6–4, 4–6, 6–2
1992	Chuck Adams	Steve Bryan	6–4, 6–4
1993	Kevin Ullyett	Maurice Ruah	6–3, 6–2
1994	Vince Spadea	Cristiano Caratti	6–1, 4–6, 7–5
1995-96	not held
1997	Gianluca Pozzi	Wayne Black	6–4, 6–2
1998	Geoff Grant	Diego Nargiso	5–7, 6–3, 7–5
1999	Alex O'Brien	Max Mirnyi	6–2, 6–2
2000	Takao Suzuki	Yoon Yong-Il	6–2, 6–4
2001-05	not held
2006	Sam Querrey	Andrea Stoppini	6–2, 6–3
2007	Noam Okun	Kevin Anderson	6–4, 6–3
2008	Rajeev Ram	Scoville Jenkins	7–5, 6–4
2009	Alex Kuznetsov	Tim Smyczek	6–4, 7–6(1)
2010	Brian Dabul	Tim Smyczek	6–1, 1–6, 6–1
2011	James Blake	Bobby Reynolds	6–3, 6–1
2012	John-Patrick Smith	Ričardas Berankis	3–6, 6–3, 7–6(7–3)
2013	Jack Sock	Bradley Klahn	6–2, 6–2
2014	Denis Kudla	Farrukh Dustov	6–2, 6–2
2015	Somdev Devvarman	Daniel Nguyen	7–5, 4–6, 7–6(7–5)
2016	Yoshihito Nishioka	Frances Tiafoe	6–3, 6–2
2017	Akira Santillan	Ramkumar Ramanathan	7–6(7–1), 6–2
2018	Evgeny Karlovskiy	Jason Jung	6–3, 6–2
2019	Bradley Klahn	Jason Kubler	6–2, 7–5

Doubles

Year	Champion	Runner-up	Score
1984	Dan Goldie Michael Kures	Ricardo Acuña Belus Prajoux	3–6, 6–4, 7–5
1985	Ricky Brown Luke Jensen	Kelly Evernden Brian Levine	6–4, 6–7, 6–4
1986	not held
1987	Tobias Svantesson Jon Treml	Pieter Aldrich Warren Green	6–3, 6–4
1988	Ricardo Acuña Royce Deppe	Jared Palmer Pete Sampras	6–4, 6–4
1989	Ville Jansson Scott Warner	Bill Benjes Arkie Engle	6–7, 6–4, 6–4
1990	Zeeshan Ali Menno Oosting	Doug Flach Luis Herrera	4–6, 6–3, 6–2
1991	Byron Black Scott Melville	Keith Evans Dave Randall	6–4, 4–6, 6–2
1992	Andrew Kratzmann Roger Rasheed	Rick Witsken Todd Witsken	6–3, 3–6, 6–3
1993	Wayne Arthurs Mark Petchey	Pat Rafter Sandon Stolle	7–6, 6–7, 6–4
1994	Brian MacPhie David Witt	Doug Flach Wade McGuire	7–5, 6–2
1995-96	not held
1997	Michael Sell Myles Wakefield	Chad Clark Ben Ellwood	6–3, 7–6
1998	Grant Silcock Myles Wakefield	Geoff Grant Mark Merklein	1–6, 7–6, 7–6
1999	James Blake Thomas Blake	Max Mirnyi Alexander Reichel	6–4, 6–7, 6–3
2000	Lee Hyung-taik Yoon Yong-il	Matthew Breen Luke Smith	2–6, 7–5, 6–3
2001-05	not held
2006	Cecil Mamiit Eric Taino	Scoville Jenkins Rajeev Ram	6–2, 6–4
2007	Patrick Briaud Chris Drake	Nicholas Monroe Izak van der Merwe	7–6, 6–4
2008	Todd Widom Michael Yani	Chen Ti Jose Statham	6–2, 6–2
2009	Carsten Ball Travis Rettenmaier	Brett Joelson Ryan Sweeting	6–1, 6–2
2010	Ryler DeHeart Pierre-Ludovic Duclos	Rik de Voest Somdev Devvarman	7–6(4), 4–6, [10–8]
2011	Treat Conrad Huey Bobby Reynolds	Jordan Kerr Travis Parrott	7–6(9–7), 6–4
2012	Devin Britton Jeff Dadamo	John Peers John-Patrick Smith	1–6, 6–2, [10–6]
2013	Yuki Bhambri Michael Venus	Somdev Devvarman Jack Sock	2–6, 6–2, [10–8]
2014	Thanasi Kokkinakis Denis Kudla	Evan King Raymond Sarmiento	6–2, 7–6(7–4)
2015	Johan Brunström Nicholas Monroe	Sekou Bangoura Frank Dancevic	4–6, 6–3, [10–8]
2016	Stefan Kozlov John-Patrick Smith	Sekou Bangoura David O'Hare	6–3, 6–3
2017	Sanchai Ratiwatana Christopher Rungkat	Kevin King Bradley Klahn	7–6(7–4), 6–2
2018	Austin Krajicek Jeevan Nedunchezhiyan	Roberto Maytín Christopher Rungkat	6–7(4–7), 6–4, [10–5]
2019	JC Aragone Bradley Klahn	Christopher Eubanks Thai-Son Kwiatkowski	7–5, 6–4