van Duzer, John

TennisLink · USTA · WTN

Active Flights

NTRP Ratings

Rating	Type	Year	Date	Expires
3.5	C	2025	Dec. 31, 2025	Dec. 31, 2027

WTN Ratings

Position Distribution

Partners

Partner	W	L	xW	Together
Harold Krent	5	2	4.8	7
Chuck Zitnick	4	2	3.8	6
Brian Lowy	1	4	2.0	5
William James	3	1	2.4	4
Gary Spangler	2	2	2.1	4
Steve Franks	1	2	1.6	3
Mark MacDonald	2	1	1.9	3
Paul James	1	2	0.6	3
Gerald Abbott	2	0	1.6	2
Joseph Lyden	1	1	1.5	2
William Kao	2	0	1.2	2
Andrew Pappas	1	0	0.8	1
John Randazzo	0	1	0.9	1
Michael Schultz	1	0	0.6	1
Howard Gartzman	1	0	0.9	1
Daniel Song	0	1	0.5	1
Daniel Robin	1	0	0.7	1
Andrew Rubanovich	1	0	0.3	1

Opponents

Opponent	W	L	xW	Faced
Richard McLean	1	5	2.8	6
David MacK	4	1	2.4	5
Bill Marcus	4	0	2.9	4
Matthew Newman	4	0	1.9	4
Jeffrey Porto	2	2	1.9	4
David Alvah Martin	0	4	0.6	4
Robert Barry	3	0	1.7	3
Michael Aitken	3	0	2.4	3
Thomas Gilbertson	0	3	0.4	3
Eric Esancy	1	1	1.7	2
Phil Debuhr	2	0	1.4	2
Gary Holzman	2	0	1.5	2
Richard Wilk	2	0	0.8	2
Neal Johnson	1	1	1.2	2
Michael Edwards	2	0	1.7	2
Robert Block	2	0	1.5	2
Alfred Ramirez	1	1	1.3	2
William Kao	0	2	1.2	2
Scott Smith	2	0	0.9	2
Randy Robbie	1	0	0.8	1
Ian Magrisso	1	0	0.8	1
Howard Braun	0	1	0.8	1
Ronald Schwartz	0	1	0.8	1
Robert Wheeler III	1	0	0.8	1
Richard Foss	1	0	0.9	1
Mil Ovan	1	0	0.9	1
Hunter Wiggins	0	1	0.9	1
Darryl Lewis	1	0	0.7	1
Paul Leonardo	1	0	0.7	1
Dino Tsorotiotis	1	0	0.7	1
Craig Wells	1	0	0.9	1
Tom Buerger	1	0	0.9	1
William Lange	1	0	0.7	1
Gerald Abbott	0	1	0.3	1
Robert Peick	0	1	0.3	1
Keith Giltner	0	1	0.6	1
Chris Gair	0	1	0.6	1
Phil Frederickson	1	0	0.6	1
Bob Rubin	1	0	0.9	1
Shawn Erickson	0	1	0.5	1
Hiren Patel	0	1	0.5	1
Peter Brecknock	0	1	0.5	1
Lester Pawula	1	0	0.7	1
Rick Jett	1	0	0.7	1
Bud Stephani	1	0	1.0	1
Scott Williamson	1	0	1.0	1
Jay Freedman	0	1	0.1	1
Thomas White	0	1	0.7	1
James Jones	0	1	0.7	1
Rod Schroeder	0	1	0.2	1
Alan Halleck	1	0	0.8	1
Thomas Stotter	0	1	0.4	1
Mitchell Weinstein	0	1	0.4	1
Donald Roubitchek	1	0	0.7	1
David Baird	0	1	0.4	1
Charles Schinzer	0	1	0.4	1
Rich Cobb	1	0	0.8	1
Dwight Janzen	1	0	0.8	1
William Strickley	1	0	0.6	1

Match History (48)

Date	Flight	Pos	Partner	Opponent(s)	Score	P(win)	Result
3/15/2026	65 & Over M 7.0 winter	3# Doubles	Andrew Pappas	Randy Robbie / Ian Magrisso	6-0 6-3	82%	W
3/1/2026	55 & Over M 7.0 Winter	3# Doubles	Steve Franks	Howard Braun / Ronald Schwartz	6-2 6-2	78%	L
2/15/2026	65 & Over M 7.0 winter	3# Doubles	Gerald Abbott	Robert Wheeler III / Eric Esancy	7-6 6-2	84%	W
12/21/2025	65 & Over M 7.0	1# Doubles	William James	Robert Barry / Phil Debuhr	7-5 6-7	78%	W
12/6/2025	65 & Over M 7.0	1# Doubles	William James	Richard Foss / Mil Ovan	6-3 6-0	88%	W
11/15/2025	55&O Men 7.0	3# Doubles	John Randazzo	Hunter Wiggins / Eric Esancy	6-2 6-3	86%	L
11/8/2025	65 & Over M 7.0	1# Doubles	William James	Gary Holzman / Bill Marcus	6-2 3-6 1-0	68%	W
9/28/2025	55&O Men 7.0	3# Doubles	Harold Krent	Darryl Lewis / Paul Leonardo	6-1 6-1	66%	W
9/7/2025	65 & Over M 7.0	2# Doubles	Mark MacDonald	Bill Marcus / Dino Tsorotiotis	6-2 6-2	71%	W
8/24/2025	65 & Over M 7.0	2# Doubles	Harold Krent	Craig Wells / Tom Buerger	6-4 6-4	88%	W
8/16/2025	65 & Over M 7.0	2# Doubles	Gerald Abbott	Michael Aitken / Bill Marcus	6-1 7-6	79%	W
8/9/2025	65 & Over M 7.0	3# Doubles	Harold Krent	Matthew Newman / Richard Wilk	6-0 6-0	34%	W
7/27/2025	65 & Over M 7.0	2# Doubles	Brian Lowy	Richard McLean / Jeffrey Porto	6-4 6-2	40%	L
7/19/2025	65 & Over M 7.0	2# Doubles	Gary Spangler	William Lange / Bill Marcus	6-7 6-3 1-0	71%	W
7/1/2025	65 & Over M 8.0	1# Doubles	William James	Thomas Gilbertson / David Alvah Martin	6-1 6-2	7%	L
6/28/2025	65 & Over M 7.0	1# Doubles	Joseph Lyden	Neal Johnson / David MacK	2-6 6-2 1-0	70%	L
6/22/2025	65 & Over M 7.0	1# Doubles	Joseph Lyden	Michael Aitken / Gary Holzman	6-3 6-4	80%	W
6/1/2025	65 & Over M 7.0	2# Doubles	Brian Lowy	Neal Johnson / David MacK	6-3 6-2	55%	W
4/27/2025	55 & Over M 7.0 Winter	1# Doubles	Brian Lowy	Gerald Abbott / Robert Peick	6-3 6-1	27%	L
4/26/2025	55 & Over M 7.0 Winter	1# Doubles	Brian Lowy	Keith Giltner / Chris Gair	6-3 6-4	58%	L
3/29/2025	65 & Over M 7.0 winter	3# Doubles	Michael Schultz	Matthew Newman / Phil Frederickson	6-4 6-1	59%	W
3/2/2025	65 & Over M 7.0 winter	1# Doubles	Howard Gartzman	Michael Edwards / Bob Rubin	6-1 6-3	88%	W
2/16/2025	55 & Over M 7.0 Winter	1# Doubles	Harold Krent	Shawn Erickson / Hiren Patel	7-6 6-0	46%	L
1/19/2025	65 & Over M 7.0 winter	1# Doubles	Chuck Zitnick	Michael Edwards / Michael Aitken	6-2 6-4	81%	W
1/12/2025	55 & Over M 7.0 Winter	1# Doubles	Daniel Song	Peter Brecknock / Richard McLean	7-6 6-0	53%	L
11/10/2024	55&O Men 7.0	3# Doubles	Gary Spangler	Lester Pawula / Rick Jett	6-3 6-3	70%	W
10/20/2024	55&O Men 7.0	1# Doubles	Harold Krent	Bud Stephani / Scott Williamson	4-6 6-3 1-0	96%	W
9/29/2024	55&O Men 7.0	2# Doubles	Harold Krent	Robert Block / Alfred Ramirez	6-1 6-1	75%	W
7/23/2024	65 & Over M 8.0	1# Doubles	Paul James	Jay Freedman / David Alvah Martin	6-0 6-0	15%	L
7/14/2024	65 & Over M 7.0	1# Doubles	William Kao	Jeffrey Porto / Richard McLean	7-6 6-7 1-0	59%	W
7/9/2024	65 & Over M 8.0	1# Doubles	Paul James	Thomas Gilbertson / David Alvah Martin	6-4 6-0	16%	L
6/18/2024	65 & Over M 8.0	1# Doubles	Brian Lowy	David Alvah Martin / Richard McLean	7-5 6-1	18%	L
6/16/2024	65 & Over M 7.0	1# Doubles	William Kao	Robert Barry / Phil Debuhr	6-2 7-6	59%	W
6/9/2024	65 & Over M 7.0	2# Doubles	Harold Krent	Thomas White / James Jones	6-4 5-7 1-0	74%	L
5/21/2024	65 & Over M 8.0	1# Doubles	Gary Spangler	Thomas Gilbertson / Rod Schroeder	2-6 6-1 1-0	19%	L
5/5/2024	65 & Over M 7.0 winter	1# Doubles	Gary Spangler	Jeffrey Porto / Richard McLean	6-2 6-2	48%	L
4/14/2024	55 & Over M 7.0 Winter	2# Doubles	Mark MacDonald	Robert Block / Alan Halleck	7-5 6-4	76%	W
4/7/2024	55 & Over M 7.0 Winter	1# Doubles	Steve Franks	Thomas Stotter / Mitchell Weinstein	2-6 7-5 1-0	41%	L
3/24/2024	65 & Over M 7.0 winter	2# Doubles	Daniel Robin	Donald Roubitchek / Matthew Newman	6-2 6-4	70%	W
3/3/2024	55 & Over M 7.0 Winter	2# Doubles	Mark MacDonald	David Baird / Charles Schinzer	6-4 6-1	45%	L
2/18/2024	65 & Over M 7.0 winter	3# Doubles	Andrew Rubanovich	Robert Barry / David MacK	6-7 7-6	30%	W
1/28/2024	65 & Over M 7.0 winter	1# Doubles	Chuck Zitnick	Alfred Ramirez / William Kao	6-3 6-1	52%	L
1/21/2024	55 & Over M 7.0 Winter	1# Doubles	Steve Franks	David MacK / Jeffrey Porto	6-3 7-6	41%	W
12/10/2023	65&O Men 7.0 (NO TRANSFERS)	1# Doubles	Chuck Zitnick	Richard McLean / William Kao	6-2 6-3	66%	L
12/2/2023	65&O Men 7.0 (NO TRANSFERS)	1# Doubles	Chuck Zitnick	Richard Wilk / David MacK	7-5 7-6	46%	W
11/19/2023	65&O Men 7.0 (NO TRANSFERS)	1# Doubles	Chuck Zitnick	Rich Cobb / Dwight Janzen	6-4 6-3	78%	W
11/12/2023	65&O Men 7.0 (NO TRANSFERS)	1# Doubles	Chuck Zitnick	Scott Smith / William Strickley	6-3 7-5	59%	W
10/1/2023	65&O Men 7.0 (NO TRANSFERS)	2# Doubles	Paul James	Scott Smith / Matthew Newman	6-4 6-4	30%	W

Team History

Year	Flight	Team	Role
2026	CDTA 55 & Over M 7.0 Winter Active	CDTA W 55&OM7.0 3.Tam Woods Sun 11 $22
2026	CDTA 65 & Over M 7.0 winter Active	CDTA W 65&OM7.0 1.Tam Spangler Sat 3 $22
2026	CDTA E 55&O Men 7.0	CDTA E 55&OM7.0 2Tam Woods Sun 11 $22
2026	CDTA 65 & Over M 7.0	CDTA NP 65&OM7.0 2Tam Spangler Sat 3 $22
2025	CDTA 55 & over M 7.0 Summer	CDTA S A55M7.0 2Tam Woods Sun 11 $22
2025	CDTA 65 & Over M 8.0	CDTA S A65M8.0 1River Trails Spangler Tue 6:30 $26
2025	CDTA E 55&O Men 7.0	CDTA E 55&OM7.0 5.Tam Woods Sun 11 $22
2025	CDTA 55 & Over M 7.0 Winter	CDTA W 55&OM7.0 4.Tam Woods Sun 11 $22
2025	CDTA 65 & Over M 7.0 winter	CDTA W 3.65&OM7.0 3.Tam Spangler Sat 1 $22
2025	CDTA 65 & Over M 7.0	CDTA S A65M7.0 1Tam Spangler Sat 3 $22
2024	CDTA 65 & Over M 7.0	CDTA S 65&OM7.0 1.Tam Spangler Sun 11 $22
2024	CDTA 65 & Over M 8.0	CDTA S 65&OM8.0 1.River Trails Robin Tue 6:30 $25
2024	CDTA 55 & Over M 7.0 Winter	CDTA W 55&OM7.0 6.Centennial Woods Sun 7 $25
2024	CDTA 65 & Over M 7.0 winter	CDTA W 65&OM7.0 2.Tam Spangler Sun 11 $22
2024	CDTA E 65&O Men 7.0 (NO TRANSFERS)	CDTA E 65&OM7.0 2.Tam Spangler Sun 11 $22