Statistical Analysis and Estimated Tennis Ratings to the 10,000th of a Point
Match History (Recent) View Advanced Player Stats
John Van Duzer (Glenview, IL)
Male 		3.5 C
12/31/2024
Estimated Dynamic Rating 3.4593
1/30/2025
Projected Year End Rating ------
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3.5 Rating Meter
Rating Meter
3.0001 - 3.5000
Recent Match History Current Rating History
Recent History
League/Level Total
Matches		 Win Loss Tie WPct Total
Sets		 Win Loss WPct Total
Games		 Win Loss WPct Defaults
Adult 55+ 7.0 7 4 3 0 57.1 16 9 7 56.3 131 70 61 53.4 0
Adult 65+ 7.0 10 8 2 0 80.0 24 16 8 66.7 203 113 90 55.7 0
Adult 65+ 8.0 4 0 4 0 0.0 9 1 8 11.1 63 17 46 27.0 0
Total 21 12 9 0 57.1 49 26 23 53.1 397 200 197 50.4 0
Match Date League Team Court Partner Opponent(s) W/L Result Match Rating
01/19/2025 Adult 65+
7.0		 CDTA W 3.65&OM7.0 3.Tam Spangler Sat 1 $22
Midwest		 D1 Chuck Zitnick
(3.36) 		Michael Edwards
(3.35)
Michael Aitken
(3.16) 		W 6-2
6-4		 3.49 3.46
01/12/2025 Adult 55+
7.0		 CDTA W 55&OM7.0 4.Tam Woods Sun 11 $22
Midwest		 D1 Daniel Song
(3.27) 		Peter Brecknock
(3.56)
Richard McLean
(3.40) 		L 7-6
6-0		 3.37 3.44
11/23/2024 Adult 65+
7.0
Sectionals		 CDTA S 65&OM7.0 1.Tam Spangler Sun 11 $22
Midwest		 D3 Harold Krent
(3.52) 		Jeffrey Schubert
(3.50)
John McGeehan
(3.53) 		W 3-6
6-0
1-0		 3.61 3.48
11/23/2024 Adult 65+
7.0
Sectionals		 CDTA S 65&OM7.0 1.Tam Spangler Sun 11 $22
Midwest		 D3 Harold Krent
(3.54) 		James Haxton
(3.30)
Dan McCloskey
(3.47) 		W 6-4
5-7
1-0		 3.36 3.43
11/22/2024 Adult 65+
7.0
Sectionals		 CDTA S 65&OM7.0 1.Tam Spangler Sun 11 $22
Midwest		 D3 Harold Krent
(3.51) 		Steve Dalton
(3.17)
Rex Neal
(3.33) 		W 6-2
6-1		 3.54 3.45
11/10/2024 Adult 55+
7.0		 CDTA E 55&OM7.0 5.Tam Woods Sun 11 $22
Midwest		 D3 Gary Spangler
(3.47) 		Lester Pawula
(3.28)
Rick Jett
(3.46) 		W 6-3
6-3		 3.53 3.46
10/20/2024 Adult 55+
7.0		 CDTA E 55&OM7.0 5.Tam Woods Sun 11 $22
Midwest		 D1 Harold Krent
(3.69) 		Bud Stephani
(3.36)
Scott Williamson
(3.00) 		W 4-6
6-3
1-0		 S 3.49
09/29/2024 Adult 55+
7.0		 CDTA E 55&OM7.0 5.Tam Woods Sun 11 $22
Midwest		 D2 Harold Krent
(3.65) 		Robert Block
(3.32)
Alfred Ramirez
(3.46) 		W 6-1
6-1		 3.66 3.49
07/23/2024 Adult 65+
8.0		 CDTA S 65&OM8.0 1.River Trails Robin Tue 6:30 $25
Midwest		 D1 Paul James
(3.72) 		Jay Freedman
(3.83)
David Alvah Martin
(4.00) 		L 6-0
6-0		 S 3.42
07/14/2024 Adult 65+
7.0		 CDTA S 65&OM7.0 1.Tam Spangler Sun 11 $22
Midwest		 D1 William Kao
(3.62) 		Jeffrey Porto
(3.53)
Richard McLean
(3.51) 		W 7-6
6-7
1-0		 3.43 3.42
07/09/2024 Adult 65+
8.0		 CDTA S 65&OM8.0 1.River Trails Robin Tue 6:30 $25
Midwest		 D1 Paul James
(3.74) 		Thomas Gilbertson
(3.82)
David Alvah Martin
(4.09) 		L 6-4
6-0		 S 3.41
06/18/2024 Adult 65+
8.0		 CDTA S 65&OM8.0 1.River Trails Robin Tue 6:30 $25
Midwest		 D1 Brian Lowy
(3.70) 		David Alvah Martin
(-----)
Richard McLean
(3.46) 		L 7-5
6-1		 S 3.41
06/16/2024 Adult 65+
7.0		 CDTA S 65&OM7.0 1.Tam Spangler Sun 11 $22
Midwest		 D1 William Kao
(3.60) 		robert barry
(3.46)
Phil Debuhr
(3.32) 		W 6-2
7-6		 3.46 3.41
06/09/2024 Adult 65+
7.0		 CDTA S 65&OM7.0 1.Tam Spangler Sun 11 $22
Midwest		 D2 Harold Krent
(3.61) 		Thomas White
(-----)
James Jones
(3.39) 		L 6-4
5-7
1-0		 S 3.48
05/21/2024 Adult 65+
8.0		 CDTA S 65&OM8.0 1.River Trails Robin Tue 6:30 $25
Midwest		 D1 Gary Spangler
(3.32) 		Thomas Gilbertson
(3.84)
Rod Schroeder
(3.91) 		L 2-6
6-1
1-0		 3.80 3.48
05/05/2024 Adult 65+
7.0		 CDTA W 65&OM7.0 2.Tam Spangler Sun 11 $22
Midwest		 D1 Gary Spangler
(3.41) 		Jeffrey Porto
(3.49)
Richard McLean
(3.47) 		L 6-2
6-2		 3.17 3.35
04/14/2024 Adult 55+
7.0		 CDTA W 55&OM7.0 6.Centennial Woods Sun 7 $25
Midwest		 D2 Mark MacDonald
(3.58) 		Robert Block
(3.37)
Alan Halleck
(3.13) 		W 7-5
6-4		 3.25 3.36
04/07/2024 Adult 55+
7.0		 CDTA W 55&OM7.0 6.Centennial Woods Sun 7 $25
Midwest		 D1 steve franks
(3.41) 		Thomas Stotter
(3.44)
Mitchell Weinstein
(3.35) 		L 2-6
7-5
1-0		 3.43 3.41
03/24/2024 Adult 65+
7.0		 CDTA W 65&OM7.0 2.Tam Spangler Sun 11 $22
Midwest		 D2 Daniel Robin
(3.47) 		Donald Roubitchek
(3.38)
matthew newman
(3.53) 		W 6-2
6-4		 3.57 3.43
03/03/2024 Adult 55+
7.0		 CDTA W 55&OM7.0 6.Centennial Woods Sun 7 $25
Midwest		 D2 Mark MacDonald
(3.56) 		David Baird
(3.55)
Charles Schinzer
(3.41) 		L 6-4
6-1		 3.17 3.32
02/18/2024 Adult 65+
7.0		 CDTA W 65&OM7.0 2.Tam Spangler Sun 11 $22
Midwest		 D3 Andrew Rubanovich
(3.01) 		robert barry
(3.47)
David Mack
(3.32) 		W 6-7
7-6		 3.54 3.43
01/19/2025 D1 Adult 65+
7.0
CDTA W 3.65&OM7.0 3.Tam Spangler Sat 1 $22
Midwest		 W CDTA W 1.65&OM7.0 1.Deer Creek Rubin Sun 6 $20
Midwest
Chuck Zitnick (3.36) 6-2
6-4		 Michael Edwards (3.35)
Michael Aitken (3.16)
Match: 3.49 Rating: 3.46
01/12/2025 D1 Adult 55+
7.0
CDTA W 55&OM7.0 4.Tam Woods Sun 11 $22
Midwest		 L CDTA W 55&OM7.0 7.Naperville Esancy Sun 4:30 $24
Midwest
Daniel Song (3.27) 7-6
6-0		 Peter Brecknock (3.56)
Richard McLean (3.40)
Match: 3.37 Rating: 3.44
11/23/2024 D3 Adult 65+
7.0
Sectionals
CDTA S 65&OM7.0 1.Tam Spangler Sun 11 $22
Midwest		 W OH NEO A65 7.0M Longoria
Midwest
Harold Krent (3.52) 3-6
6-0
1-0		 Jeffrey Schubert (3.50)
John McGeehan (3.53)
Match: 3.61 Rating: 3.48
11/23/2024 D3 Adult 65+
7.0
Sectionals
CDTA S 65&OM7.0 1.Tam Spangler Sun 11 $22
Midwest		 W NWO 65&Over 7.0 Men MCCLOSKEY-SVC
Midwest
Harold Krent (3.54) 6-4
5-7
1-0		 James Haxton (3.30)
Dan McCloskey (3.47)
Match: 3.36 Rating: 3.43
11/22/2024 D3 Adult 65+
7.0
Sectionals
CDTA S 65&OM7.0 1.Tam Spangler Sun 11 $22
Midwest		 W CIN Indianapolis, A65&O 7.0 M, Dalton (IRC-D)
Midwest
Harold Krent (3.51) 6-2
6-1		 Steve Dalton (3.17)
Rex Neal (3.33)
Match: 3.54 Rating: 3.45
11/10/2024 D3 Adult 55+
7.0
CDTA E 55&OM7.0 5.Tam Woods Sun 11 $22
Midwest		 W CDTA E 55&OM7.0 4.Oak Brook Franzo Sun 7 $22
Midwest
Gary Spangler (3.47) 6-3
6-3		 Lester Pawula (3.28)
Rick Jett (3.46)
Match: 3.53 Rating: 3.46
10/20/2024 D1 Adult 55+
7.0
CDTA E 55&OM7.0 5.Tam Woods Sun 11 $22
Midwest		 W CDTA E 55&OM7.0 1.MT Chi Masnyk Sat 6 $31.5
Midwest
Harold Krent (3.69) 4-6
6-3
1-0		 Bud Stephani (3.36)
Scott Williamson (3.00)
Match: S Rating: 3.49
09/29/2024 D2 Adult 55+
7.0
CDTA E 55&OM7.0 5.Tam Woods Sun 11 $22
Midwest		 W CDTA E 55&OM7.0 6.River Trails Levin Sun 2 $26
Midwest
Harold Krent (3.65) 6-1
6-1		 Robert Block (3.32)
Alfred Ramirez (3.46)
Match: 3.66 Rating: 3.49
07/23/2024 D1 Adult 65+
8.0
CDTA S 65&OM8.0 1.River Trails Robin Tue 6:30 $25
Midwest		 L CDTA S 65&OM8.0 2.River Trails Gilbertson Tue 6:30 $25
Midwest
Paul James (3.72) 6-0
6-0		 Jay Freedman (3.83)
David Alvah Martin (4.00)
Match: S Rating: 3.42
07/14/2024 D1 Adult 65+
7.0
CDTA S 65&OM7.0 1.Tam Spangler Sun 11 $22
Midwest		 W CDTA S 65&OM7.0 2.Wheaton Mills Sun 12 $20
Midwest
William Kao (3.62) 7-6
6-7
1-0		 Jeffrey Porto (3.53)
Richard McLean (3.51)
Match: 3.43 Rating: 3.42
07/09/2024 D1 Adult 65+
8.0
CDTA S 65&OM8.0 1.River Trails Robin Tue 6:30 $25
Midwest		 L CDTA S 65&OM8.0 2.River Trails Gilbertson Tue 6:30 $25
Midwest
Paul James (3.74) 6-4
6-0		 Thomas Gilbertson (3.82)
David Alvah Martin (4.09)
Match: S Rating: 3.41
06/18/2024 D1 Adult 65+
8.0
CDTA S 65&OM8.0 1.River Trails Robin Tue 6:30 $25
Midwest		 L CDTA S 65&OM8.0 2.River Trails Gilbertson Tue 6:30 $25
Midwest
Brian Lowy (3.70) 7-5
6-1		 David Alvah Martin (-----)
Richard McLean (3.46)
Match: S Rating: 3.41
06/16/2024 D1 Adult 65+
7.0
CDTA S 65&OM7.0 1.Tam Spangler Sun 11 $22
Midwest		 W CDTA S 65&OM7.0 2.Wheaton Mills Sun 12 $20
Midwest
William Kao (3.60) 6-2
7-6		 robert barry (3.46)
Phil Debuhr (3.32)
Match: 3.46 Rating: 3.41
06/09/2024 D2 Adult 65+
7.0
CDTA S 65&OM7.0 1.Tam Spangler Sun 11 $22
Midwest		 L CDTA S 65&OM7.0 2.Wheaton Mills Sun 12 $20
Midwest
Harold Krent (3.61) 6-4
5-7
1-0		 Thomas White (-----)
James Jones (3.39)
Match: S Rating: 3.48
05/21/2024 D1 Adult 65+
8.0
CDTA S 65&OM8.0 1.River Trails Robin Tue 6:30 $25
Midwest		 L CDTA S 65&OM8.0 2.River Trails Gilbertson Tue 6:30 $25
Midwest
Gary Spangler (3.32) 2-6
6-1
1-0		 Thomas Gilbertson (3.84)
Rod Schroeder (3.91)
Match: 3.80 Rating: 3.48
05/05/2024 D1 Adult 65+
7.0
CDTA W 65&OM7.0 2.Tam Spangler Sun 11 $22
Midwest		 L CDTA W 65&OM7.0 1.Wheaton Mills Sun 12 $20
Midwest
Gary Spangler (3.41) 6-2
6-2		 Jeffrey Porto (3.49)
Richard McLean (3.47)
Match: 3.17 Rating: 3.35
04/14/2024 D2 Adult 55+
7.0
CDTA W 55&OM7.0 6.Centennial Woods Sun 7 $25
Midwest		 W CDTA W 55&OM7.0 4.River Trails Levin Sun 2 $22
Midwest
Mark MacDonald (3.58) 7-5
6-4		 Robert Block (3.37)
Alan Halleck (3.13)
Match: 3.25 Rating: 3.36
04/07/2024 D1 Adult 55+
7.0
CDTA W 55&OM7.0 6.Centennial Woods Sun 7 $25
Midwest		 L CDTA W 55&OM7.0 1.MT Bann Castriano Sat 4 $25
Midwest
steve franks (3.41) 2-6
7-5
1-0		 Thomas Stotter (3.44)
Mitchell Weinstein (3.35)
Match: 3.43 Rating: 3.41
03/24/2024 D2 Adult 65+
7.0
CDTA W 65&OM7.0 2.Tam Spangler Sun 11 $22
Midwest		 W CDTA W 65&OM7.0 1.Wheaton Mills Sun 12 $20
Midwest
Daniel Robin (3.47) 6-2
6-4		 Donald Roubitchek (3.38)
matthew newman (3.53)
Match: 3.57 Rating: 3.43
03/03/2024 D2 Adult 55+
7.0
CDTA W 55&OM7.0 6.Centennial Woods Sun 7 $25
Midwest		 L CDTA W 55&OM7.0 3.Oak Brook Franzo Sun 7 $22
Midwest
Mark MacDonald (3.56) 6-4
6-1		 David Baird (3.55)
Charles Schinzer (3.41)
Match: 3.17 Rating: 3.32
02/18/2024 D3 Adult 65+
7.0
CDTA W 65&OM7.0 2.Tam Spangler Sun 11 $22
Midwest		 W CDTA W 65&OM7.0 1.Wheaton Mills Sun 12 $20
Midwest
Andrew Rubanovich (3.01) 6-7
7-6		 robert barry (3.47)
David Mack (3.32)
Match: 3.54 Rating: 3.43
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Match Player rating for individual match.
Rating Dynamic rating after completed match.
NC Match not yet calculated into rating.
S Self rated or unrated player involved in match so no match rating calculated for current player.
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