Statistical Analysis and Estimated Tennis Ratings to the 10,000th of a Point
Match History (2017) View Advanced Player Stats
Douglas Shaffer (Rossford, OH)
Male 		4.0 C
12/31/2023
Estimated Dynamic Rating 3.7616
9/24/2024
Projected Year End Rating ------
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4.0 Rating Meter
Rating Meter
3.5001 - 4.0000
Recent Match History Current Rating History
2017 Overall Season
League/Level Total
Matches		 Win Loss Tie WPct Total
Sets		 Win Loss WPct Total
Games		 Win Loss WPct Defaults
Adult 18+ 4.0 8 8 0 0 100.0 19 16 3 84.2 141 94 47 66.7 0
Adult 40+ 4.0 3 2 1 0 66.7 7 4 3 57.1 56 28 28 50.0 0
Adult 55+ 8.0 11 6 5 0 54.5 27 14 13 51.9 206 101 105 49.0 0
Total 22 16 6 0 72.7 53 34 19 64.2 403 223 180 55.3 0
Match Date League Team Court Partner Opponent(s) W/L Result Match Rating
08/31/2017 Adult 55+
8.0		 55&Over NWO 8.0M Creps/Klein -PTC
Midwest		 D1 Clyde Jeff Trumbull
(3.93) 		Phil Dionyssiou
(3.60)
Michael Murry
(3.82) 		W 6-1
4-6
1-0		 3.75 3.79
08/24/2017 Adult 55+
8.0		 55&Over NWO 8.0M Creps/Klein -PTC
Midwest		 D1 Clyde Jeff Trumbull
(3.98) 		Rick Gray
(3.75)
Dennis Meacham
(3.89) 		L 7-5
3-6
1-0		 3.74 3.78
08/17/2017 Adult 55+
8.0		 55&Over NWO 8.0M Creps/Klein -PTC
Midwest		 D1 Clyde Jeff Trumbull
(3.93) 		James Baltz
(3.58)
John Hohl
(3.60) 		W 6-0
6-1		 3.96 3.82
08/12/2017 Adult 18+
4.0
Regionals		 18&Over NWO 4.0M LaserShots Scott/Hartzell-PTC
Midwest		 D3 Yvo Arias
(3.83) 		David Clark
(3.84)
Andrew Mauricio
(4.05) 		W 4-6
6-4
1-0		 3.95 3.80
08/11/2017 Adult 40+
4.0
Regionals		 40&Over NWO 4.0M Stegman/Engel-PTC
Midwest		 D2 Jose Calvillo
(3.77) 		William Mooney
(3.87)
Julian Norley
(3.97) 		W 4-6
6-4
1-0		 3.93 3.78
08/05/2017 Adult 18+
4.0
Districts		 18&Over NWO 4.0M LaserShots Scott/Hartzell-PTC
Midwest		 D2 Yvo Arias
(3.87) 		Jason Raike
(3.80)
Austin Kleman
(3.84) 		W 4-6
6-3
1-0		 3.81 3.73
08/03/2017 Adult 55+
8.0		 55&Over NWO 8.0M Creps/Klein -PTC
Midwest		 D1 Fred Flower
(3.53) 		Mark Fischer
(3.79)
Thomas Dake
(3.84) 		L 6-7
6-2
1-0		 3.81 3.73
07/20/2017 Adult 55+
8.0		 55&Over NWO 8.0M Creps/Klein -PTC
Midwest		 D1 David Creps
(3.57) 		Pat Birney
(4.00)
Robert Szymanski
(3.87) 		L 6-3
6-1		 3.70 3.71
07/19/2017 Adult 40+
4.0		 40&Over NWO 4.0M Stegman/Engel-PTC
Midwest		 D3 Victor Hartzell
(4.04) 		Joe Zabowski
(3.71)
John Guy
(3.42) 		W 6-2
6-3		 3.65 3.69
07/18/2017 Adult 18+
4.0		 18&Over NWO 4.0M LaserShots Scott/Hartzell-PTC
Midwest		 D1 bill flower
(4.05) 		Bryce Hernly
(3.73)
Omar Abdul-Aziz
(3.58) 		W 6-2
6-4		 3.69 3.71
07/13/2017 Adult 55+
8.0		 55&Over NWO 8.0M Creps/Klein -PTC
Midwest		 D2 Fred Flower
(3.53) 		Gabriel Pietrykowski
(3.82)
John Hammon
(3.52) 		W 7-6
6-4		 3.80 3.74
07/06/2017 Adult 55+
8.0		 55&Over NWO 8.0M Creps/Klein -PTC
Midwest		 D1 Clyde Jeff Trumbull
(4.00) 		Rick Gray
(3.72)
Christopher Kelly
(3.84) 		L 6-1
6-3		 3.37 3.66
06/29/2017 Adult 55+
8.0		 55&Over NWO 8.0M Creps/Klein -PTC
Midwest		 D1 Rick Busselle
(3.59) 		John Hohl
(3.72)
Dana Mathewson
(3.68) 		W 6-3
6-7
1-0		 3.83 3.77
06/27/2017 Adult 18+
4.0		 18&Over NWO 4.0M LaserShots Scott/Hartzell-PTC
Midwest		 D1 Yvo Arias
(3.92) 		Ryan Motsinger
(3.51)
Todd Guardiola
(3.47) 		W 6-0
4-6
1-0		 3.58 3.73
06/22/2017 Adult 55+
8.0		 55&Over NWO 8.0M Creps/Klein -PTC
Midwest		 D1 David Creps
(3.64) 		Dan Schwartz
(3.79)
Ray Elbin
(3.54) 		W 2-6
7-5
1-0		 3.70 3.75
06/15/2017 Adult 55+
8.0		 55&Over NWO 8.0M Creps/Klein -PTC
Midwest		 D1 Clyde Jeff Trumbull
(4.06) 		Sandy McLean
(3.69)
Thomas Holzaepfel
(3.56) 		W 6-3
6-3		 3.70 3.76
06/13/2017 Adult 18+
4.0		 18&Over NWO 4.0M LaserShots Scott/Hartzell-PTC
Midwest		 D2 Yvo Arias
(3.84) 		Scott Elbin
(3.60)
Dexter Woods
(3.83) 		W 6-3
6-1		 3.94 3.82
06/07/2017 Adult 40+
4.0		 40&Over NWO 4.0M Stegman/Engel-PTC
Midwest		 D1 Jose Calvillo
(3.83) 		Jeffrey Judis
(3.60)
James Haxton
(3.64) 		L 6-0
7-5		 3.35 3.71
06/01/2017 Adult 55+
8.0		 55&Over NWO 8.0M Creps/Klein -PTC
Midwest		 D1 Dean Nofzinger
(3.56) 		Pat Birney
(3.96)
Robert Szymanski
(-----) 		L 6-2
6-0		 3.82 3.82
05/30/2017 Adult 18+
4.0		 18&Over NWO 4.0M LaserShots Scott/Hartzell-PTC
Midwest		 D1 Yvo Arias
(3.90) 		James Baltz
(3.50)
James Seiwert
(3.71) 		W 6-3
7-5		 3.71 3.82
05/16/2017 Adult 18+
4.0		 18&Over NWO 4.0M LaserShots Scott/Hartzell-PTC
Midwest		 D1 Yvo Arias
(3.86) 		Mark Weinberg
(3.40)
Jan Stamm
(3.63) 		W 6-1
6-1		 3.86 3.86
05/02/2017 Adult 18+
4.0		 18&Over NWO 4.0M LaserShots Scott/Hartzell-PTC
Midwest		 D2 Yvo Arias
(-----) 		Steve Johnson
(3.51)
Daniel Stalker
(3.43) 		W 6-1
6-1		 3.86 3.86
08/31/2017 D1 Adult 55+
8.0
55&Over NWO 8.0M Creps/Klein -PTC
Midwest		 W 55&Over NWO 8.0M Lugbill/Nelson-Wauseon
Midwest
Clyde Jeff Trumbull (3.93) 6-1
4-6
1-0		 Phil Dionyssiou (3.60)
Michael Murry (3.82)
Match: 3.75 Rating: 3.79
08/24/2017 D1 Adult 55+
8.0
55&Over NWO 8.0M Creps/Klein -PTC
Midwest		 L 55&Over NWO 8.0M Wilkins-TTC
Midwest
Clyde Jeff Trumbull (3.98) 7-5
3-6
1-0		 Rick Gray (3.75)
Dennis Meacham (3.89)
Match: 3.74 Rating: 3.78
08/17/2017 D1 Adult 55+
8.0
55&Over NWO 8.0M Creps/Klein -PTC
Midwest		 W 55&Over NWO 8.0M Baltz FT Old Guys-FT
Midwest
Clyde Jeff Trumbull (3.93) 6-0
6-1		 James Baltz (3.58)
John Hohl (3.60)
Match: 3.96 Rating: 3.82
08/12/2017 D3 Adult 18+
4.0
Regionals
18&Over NWO 4.0M LaserShots Scott/Hartzell-PTC
Midwest		 W Olympic
Midwest
Yvo Arias (3.83) 4-6
6-4
1-0		 David Clark (3.84)
Andrew Mauricio (4.05)
Match: 3.95 Rating: 3.80
08/11/2017 D2 Adult 40+
4.0
Regionals
40&Over NWO 4.0M Stegman/Engel-PTC
Midwest		 W OH NEO A40 4.0M Goldstein
Midwest
Jose Calvillo (3.77) 4-6
6-4
1-0		 William Mooney (3.87)
Julian Norley (3.97)
Match: 3.93 Rating: 3.78
08/05/2017 D2 Adult 18+
4.0
Districts
18&Over NWO 4.0M LaserShots Scott/Hartzell-PTC
Midwest		 W 18&Over NWO 4.0M Lugbill/Nelson-Wauseon
Midwest
Yvo Arias (3.87) 4-6
6-3
1-0		 Jason Raike (3.80)
Austin Kleman (3.84)
Match: 3.81 Rating: 3.73
08/03/2017 D1 Adult 55+
8.0
55&Over NWO 8.0M Creps/Klein -PTC
Midwest		 L 55&Over NWO 8.0M Fialka -Sandusky Perkins HS
Midwest
Fred Flower (3.53) 6-7
6-2
1-0		 Mark Fischer (3.79)
Thomas Dake (3.84)
Match: 3.81 Rating: 3.73
07/20/2017 D1 Adult 55+
8.0
55&Over NWO 8.0M Creps/Klein -PTC
Midwest		 L 55&Over NWO 8.0M Florian/Ammons-Belmont
Midwest
David Creps (3.57) 6-3
6-1		 Pat Birney (4.00)
Robert Szymanski (3.87)
Match: 3.70 Rating: 3.71
07/19/2017 D3 Adult 40+
4.0
40&Over NWO 4.0M Stegman/Engel-PTC
Midwest		 W 40&Over NWO 4.0M Wilkins-TTC
Midwest
Victor Hartzell (4.04) 6-2
6-3		 Joe Zabowski (3.71)
John Guy (3.42)
Match: 3.65 Rating: 3.69
07/18/2017 D1 Adult 18+
4.0
18&Over NWO 4.0M LaserShots Scott/Hartzell-PTC
Midwest		 W 18&Over NWO 4.0M Kolvey-PTC
Midwest
bill flower (4.05) 6-2
6-4		 Bryce Hernly (3.73)
Omar Abdul-Aziz (3.58)
Match: 3.69 Rating: 3.71
07/13/2017 D2 Adult 55+
8.0
55&Over NWO 8.0M Creps/Klein -PTC
Midwest		 W 55&Over NWO 8.0M Lugbill/Nelson-Wauseon
Midwest
Fred Flower (3.53) 7-6
6-4		 Gabriel Pietrykowski (3.82)
John Hammon (3.52)
Match: 3.80 Rating: 3.74
07/06/2017 D1 Adult 55+
8.0
55&Over NWO 8.0M Creps/Klein -PTC
Midwest		 L 55&Over NWO 8.0M Wilkins-TTC
Midwest
Clyde Jeff Trumbull (4.00) 6-1
6-3		 Rick Gray (3.72)
Christopher Kelly (3.84)
Match: 3.37 Rating: 3.66
06/29/2017 D1 Adult 55+
8.0
55&Over NWO 8.0M Creps/Klein -PTC
Midwest		 W 55&Over NWO 8.0M Baltz FT Old Guys-FT
Midwest
Rick Busselle (3.59) 6-3
6-7
1-0		 John Hohl (3.72)
Dana Mathewson (3.68)
Match: 3.83 Rating: 3.77
06/27/2017 D1 Adult 18+
4.0
18&Over NWO 4.0M LaserShots Scott/Hartzell-PTC
Midwest		 W 18&Over NWO 4.0M Drumm- BG High School
Midwest
Yvo Arias (3.92) 6-0
4-6
1-0		 Ryan Motsinger (3.51)
Todd Guardiola (3.47)
Match: 3.58 Rating: 3.73
06/22/2017 D1 Adult 55+
8.0
55&Over NWO 8.0M Creps/Klein -PTC
Midwest		 W 55&Over NWO 8.0M Schmidt/Schwartz-Findlay HS
Midwest
David Creps (3.64) 2-6
7-5
1-0		 Dan Schwartz (3.79)
Ray Elbin (3.54)
Match: 3.70 Rating: 3.75
06/15/2017 D1 Adult 55+
8.0
55&Over NWO 8.0M Creps/Klein -PTC
Midwest		 W 55&Over NWO 8.0M Fialka -Sandusky Perkins HS
Midwest
Clyde Jeff Trumbull (4.06) 6-3
6-3		 Sandy McLean (3.69)
Thomas Holzaepfel (3.56)
Match: 3.70 Rating: 3.76
06/13/2017 D2 Adult 18+
4.0
18&Over NWO 4.0M LaserShots Scott/Hartzell-PTC
Midwest		 W 18&Over NWO 4.0M Albert - Findlay HS
Midwest
Yvo Arias (3.84) 6-3
6-1		 Scott Elbin (3.60)
Dexter Woods (3.83)
Match: 3.94 Rating: 3.82
06/07/2017 D1 Adult 40+
4.0
40&Over NWO 4.0M Stegman/Engel-PTC
Midwest		 L 40&Over NWO 4.0M Kattar/Daney -SVC
Midwest
Jose Calvillo (3.83) 6-0
7-5		 Jeffrey Judis (3.60)
James Haxton (3.64)
Match: 3.35 Rating: 3.71
06/01/2017 D1 Adult 55+
8.0
55&Over NWO 8.0M Creps/Klein -PTC
Midwest		 L 55&Over NWO 8.0M Florian/Ammons-Belmont
Midwest
Dean Nofzinger (3.56) 6-2
6-0		 Pat Birney (3.96)
Robert Szymanski (-----)
Match: 3.82 Rating: 3.82
05/30/2017 D1 Adult 18+
4.0
18&Over NWO 4.0M LaserShots Scott/Hartzell-PTC
Midwest		 W 18&Over NWO 4.0M Foukes/Horn- FT
Midwest
Yvo Arias (3.90) 6-3
7-5		 James Baltz (3.50)
James Seiwert (3.71)
Match: 3.71 Rating: 3.82
05/16/2017 D1 Adult 18+
4.0
18&Over NWO 4.0M LaserShots Scott/Hartzell-PTC
Midwest		 W 18&Over NWO 4.0M Guy's Guys TTC
Midwest
Yvo Arias (3.86) 6-1
6-1		 Mark Weinberg (3.40)
Jan Stamm (3.63)
Match: 3.86 Rating: 3.86
05/02/2017 D2 Adult 18+
4.0
18&Over NWO 4.0M LaserShots Scott/Hartzell-PTC
Midwest		 W 18&Over NWO 4.0M Malinowski/Stalker-Southview HS
Midwest
Yvo Arias (-----) 6-1
6-1		 Steve Johnson (3.51)
Daniel Stalker (3.43)
Match: 3.86 Rating: 3.86
Glossary
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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