Statistical Analysis and Estimated Tennis Ratings to the 10,000th of a Point
Match History (2016) View Advanced Player Stats
Douglas Shaffer (Rossford, OH)
Male 		4.0 C
12/31/2023
Estimated Dynamic Rating 3.7616
10/20/2024
Projected Year End Rating ------
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4.0 Rating Meter
Rating Meter
3.5001 - 4.0000
Recent Match History Current Rating History
2016 Overall Season [Doubles]
League/Level Total
Matches		 Win Loss Tie WPct Total
Sets		 Win Loss WPct Total
Games		 Win Loss WPct Defaults
Adult 18+ 4.0 12 7 5 0 58.3 28 16 12 57.1 237 131 106 55.3 0
Adult 40+ 4.0 8 7 1 0 87.5 20 14 6 70.0 164 88 76 53.7 0
Total 20 14 6 0 70.0 48 30 18 62.5 401 219 182 54.6 0
Match Date League Team Court Partner Opponent(s) W/L Result Match Rating
08/12/2016 Adult 40+
4.0
Regionals		 40&Over NWO 4.0M Stegman/Engel-PTC
Midwest		 D1 Clyde Jeff Trumbull
(3.95) 		Surendran Manoharan
(3.94)
Michael Rau
(3.89) 		W 6-3
4-6
1-0		 3.89 3.83
08/12/2016 Adult 40+
4.0
Regionals		 40&Over NWO 4.0M Stegman/Engel-PTC
Midwest		 D1 Jose Calvillo
(3.89) 		Brian Landsman
(3.74)
Donald McLean
(3.75) 		W 1-6
7-5
1-0		 3.71 3.79
08/06/2016 Adult 18+
4.0
Districts		 18&Over NWO 4.0M Scott-PTC
Midwest		 D1 Eric Stegman
(3.97) 		Dennis Meacham
(4.01)
George Hilfinger
(3.79) 		L 7-5
7-6		 3.74 3.81
08/06/2016 Adult 18+
4.0
Districts		 18&Over NWO 4.0M Scott-PTC
Midwest		 D2 Eric Stegman
(3.96) 		Sam Unnerstall
(3.94)
Randy Kim
(4.00) 		L 7-6
6-4		 3.76 3.82
08/02/2016 Adult 18+
4.0		 18&Over NWO 4.0M Scott-PTC
Midwest		 D1 Eric Stegman
(4.04) 		Timothy Nelson
(3.60)
Gabriel Pietrykowski
(3.93) 		L 6-4
6-4		 3.66 3.80
07/24/2016 Adult 18+
4.0		 18&Over NWO 4.0M Scott-PTC
Midwest		 D1 Eric Stegman
(3.98) 		Steve Nixon
(3.85)
John Cameron
(3.71) 		W 6-3
6-2		 3.98 3.88
07/22/2016 Adult 40+
4.0		 40&Over NWO 4.0M Stegman/Engel-PTC
Midwest		 D1 Eric Stegman
(-----) 		Dennis Meacham
(-----)
Joe Zabowski
(-----) 		L 6-3
6-3		 3.67 0.00
07/19/2016 Adult 18+
4.0		 18&Over NWO 4.0M Scott-PTC
Midwest		 D1 Eric Stegman
(4.03) 		Sushil Sudershan
(3.53)
Connor Parsell
(3.63) 		W 4-6
6-2
1-0		 3.78 3.85
07/10/2016 Adult 18+
4.0		 18&Over NWO 4.0M Scott-PTC
Midwest		 D1 Kevin Lewis
(-----) 		Dan Murnen
(-----)
Drew Dominiak
(-----) 		W 6-3
7-6		 3.85 0.00
07/08/2016 Adult 40+
4.0		 40&Over NWO 4.0M Stegman/Engel-PTC
Midwest		 D1 Jose Calvillo
(3.89) 		Joe Zabowski
(3.94)
John Cameron
(3.79) 		W 6-2
6-4		 4.03 3.90
07/05/2016 Adult 18+
4.0		 18&Over NWO 4.0M Scott-PTC
Midwest		 D1 Eric Stegman
(4.03) 		Billy Horn
(3.55)
Derek Via
(3.45) 		W 6-0
7-5		 3.87 3.85
06/24/2016 Adult 40+
4.0		 40&Over NWO 4.0M Stegman/Engel-PTC
Midwest		 D1 Jose Calvillo
(-----) 		Rory White
(-----)
Andrew Janes
(-----) 		W 7-6
4-6
1-0		 3.86 0.00
06/17/2016 Adult 40+
4.0		 40&Over NWO 4.0M Stegman/Engel-PTC
Midwest		 D1 Jose Calvillo
(3.90) 		Joe Zabowski
(3.94)
John Cameron
(3.85) 		W 7-6
6-4		 3.91 3.87
06/10/2016 Adult 40+
4.0		 40&Over NWO 4.0M Stegman/Engel-PTC
Midwest		 D2 David Ray
(3.74) 		John Cameron
(3.86)
Steve Nixon
(3.78) 		W 7-5
6-2		 4.03 3.91
06/07/2016 Adult 18+
4.0		 18&Over NWO 4.0M Scott-PTC
Midwest		 D2 Clyde Jeff Trumbull
(3.89) 		Dan Schwartz
(3.80)
Ray Elbin
(3.58) 		L 2-6
6-3
1-0		 3.78 3.85
06/03/2016 Adult 40+
4.0		 40&Over NWO 4.0M Stegman/Engel-PTC
Midwest		 D1 Eric Stegman
(4.02) 		D Lee Johnson
(3.67)
George Hilfinger
(3.68) 		W 5-7
6-2
1-0		 3.84 3.88
05/24/2016 Adult 18+
4.0		 18&Over NWO 4.0M Scott-PTC
Midwest		 D2 Clyde Jeff Trumbull
(3.93) 		James Knight
(3.84)
Josh Gasaway
(3.65) 		W 6-3
3-6
1-0		 3.86 3.88
05/18/2016 Adult 18+
4.0		 18&Over NWO 4.0M Scott-PTC
Midwest		 D2 Clyde Jeff Trumbull
(3.99) 		Frank Viviano
(3.52)
Eric Erickson
(3.54) 		L 6-2
5-7
1-0		 3.66 3.91
05/10/2016 Adult 18+
4.0		 18&Over NWO 4.0M Scott-PTC
Midwest		 D1 Clyde Jeff Trumbull
(3.93) 		Phil Dionyssiou
(3.51)
sandeep kukreja
(3.80) 		W 6-2
6-0		 4.10 3.98
05/03/2016 Adult 18+
4.0		 18&Over NWO 4.0M Scott-PTC
Midwest		 D2 Eric Stegman
(3.89) 		Michael Perry
(3.58)
Dean Nofzinger
(3.65) 		W 7-5
6-3		 3.92 3.92
08/12/2016 D1 Adult 40+
4.0
Regionals
40&Over NWO 4.0M Stegman/Engel-PTC
Midwest		 W Racquet Club 4.0M A40
Midwest
Clyde Jeff Trumbull (3.95) 6-3
4-6
1-0		 Surendran Manoharan (3.94)
Michael Rau (3.89)
Match: 3.89 Rating: 3.83
08/12/2016 D1 Adult 40+
4.0
Regionals
40&Over NWO 4.0M Stegman/Engel-PTC
Midwest		 W NEOA40&O4.0MCV1-Goldstein
Midwest
Jose Calvillo (3.89) 1-6
7-5
1-0		 Brian Landsman (3.74)
Donald McLean (3.75)
Match: 3.71 Rating: 3.79
08/06/2016 D1 Adult 18+
4.0
Districts
18&Over NWO 4.0M Scott-PTC
Midwest		 L 18&Over NWO 4.0M Wilkins-TTC
Midwest
Eric Stegman (3.97) 7-5
7-6		 Dennis Meacham (4.01)
George Hilfinger (3.79)
Match: 3.74 Rating: 3.81
08/06/2016 D2 Adult 18+
4.0
Districts
18&Over NWO 4.0M Scott-PTC
Midwest		 L 18&Over NWO 4.0M Kish/Damschroder-Maumee Valley CD
Midwest
Eric Stegman (3.96) 7-6
6-4		 Sam Unnerstall (3.94)
Randy Kim (4.00)
Match: 3.76 Rating: 3.82
08/02/2016 D1 Adult 18+
4.0
18&Over NWO 4.0M Scott-PTC
Midwest		 L 18&Over NWO 4.0M Nelson/Lugbill-Wauseon
Midwest
Eric Stegman (4.04) 6-4
6-4		 Timothy Nelson (3.60)
Gabriel Pietrykowski (3.93)
Match: 3.66 Rating: 3.80
07/24/2016 D1 Adult 18+
4.0
18&Over NWO 4.0M Scott-PTC
Midwest		 W 18&Over NWO 4.0M Wilkins-TTC
Midwest
Eric Stegman (3.98) 6-3
6-2		 Steve Nixon (3.85)
John Cameron (3.71)
Match: 3.98 Rating: 3.88
07/22/2016 D1 Adult 40+
4.0
40&Over NWO 4.0M Stegman/Engel-PTC
Midwest		 L 40&Over NWO 4.0M Wilkins-TTC
Midwest
Eric Stegman (-----) 6-3
6-3		 Dennis Meacham (-----)
Joe Zabowski (-----)
Match: 3.67 Rating: 0.00
07/19/2016 D1 Adult 18+
4.0
18&Over NWO 4.0M Scott-PTC
Midwest		 W 18&Over NWO 4.0M Sudershan/Malinowski-UT
Midwest
Eric Stegman (4.03) 4-6
6-2
1-0		 Sushil Sudershan (3.53)
Connor Parsell (3.63)
Match: 3.78 Rating: 3.85
07/10/2016 D1 Adult 18+
4.0
18&Over NWO 4.0M Scott-PTC
Midwest		 W 18&Over NWO 4.0M Bennett/Gstalder Those Guys-TWOS
Midwest
Kevin Lewis (-----) 6-3
7-6		 Dan Murnen (-----)
Drew Dominiak (-----)
Match: 3.85 Rating: 0.00
07/08/2016 D1 Adult 40+
4.0
40&Over NWO 4.0M Stegman/Engel-PTC
Midwest		 W 40&Over NWO 4.0M Wilkins-TTC
Midwest
Jose Calvillo (3.89) 6-2
6-4		 Joe Zabowski (3.94)
John Cameron (3.79)
Match: 4.03 Rating: 3.90
07/05/2016 D1 Adult 18+
4.0
18&Over NWO 4.0M Scott-PTC
Midwest		 W 18&Over NWO 4.0M Horn/Foukes-FT
Midwest
Eric Stegman (4.03) 6-0
7-5		 Billy Horn (3.55)
Derek Via (3.45)
Match: 3.87 Rating: 3.85
06/24/2016 D1 Adult 40+
4.0
40&Over NWO 4.0M Stegman/Engel-PTC
Midwest		 W 40&Over NWO 4.0M Wilkins-TTC
Midwest
Jose Calvillo (-----) 7-6
4-6
1-0		 Rory White (-----)
Andrew Janes (-----)
Match: 3.86 Rating: 0.00
06/17/2016 D1 Adult 40+
4.0
40&Over NWO 4.0M Stegman/Engel-PTC
Midwest		 W 40&Over NWO 4.0M Wilkins-TTC
Midwest
Jose Calvillo (3.90) 7-6
6-4		 Joe Zabowski (3.94)
John Cameron (3.85)
Match: 3.91 Rating: 3.87
06/10/2016 D2 Adult 40+
4.0
40&Over NWO 4.0M Stegman/Engel-PTC
Midwest		 W 40&Over NWO 4.0M Wilkins-TTC
Midwest
David Ray (3.74) 7-5
6-2		 John Cameron (3.86)
Steve Nixon (3.78)
Match: 4.03 Rating: 3.91
06/07/2016 D2 Adult 18+
4.0
18&Over NWO 4.0M Scott-PTC
Midwest		 L 18&Over NWO 4.0M Mersch-Findlay HS
Midwest
Clyde Jeff Trumbull (3.89) 2-6
6-3
1-0		 Dan Schwartz (3.80)
Ray Elbin (3.58)
Match: 3.78 Rating: 3.85
06/03/2016 D1 Adult 40+
4.0
40&Over NWO 4.0M Stegman/Engel-PTC
Midwest		 W 40&Over NWO 4.0M Wilkins-TTC
Midwest
Eric Stegman (4.02) 5-7
6-2
1-0		 D Lee Johnson (3.67)
George Hilfinger (3.68)
Match: 3.84 Rating: 3.88
05/24/2016 D2 Adult 18+
4.0
18&Over NWO 4.0M Scott-PTC
Midwest		 W 18&Over NWO 4.0M Kolvey -PTC
Midwest
Clyde Jeff Trumbull (3.93) 6-3
3-6
1-0		 James Knight (3.84)
Josh Gasaway (3.65)
Match: 3.86 Rating: 3.88
05/18/2016 D2 Adult 18+
4.0
18&Over NWO 4.0M Scott-PTC
Midwest		 L 18&Over NWO 4.0M Haxton-SVC
Midwest
Clyde Jeff Trumbull (3.99) 6-2
5-7
1-0		 Frank Viviano (3.52)
Eric Erickson (3.54)
Match: 3.66 Rating: 3.91
05/10/2016 D1 Adult 18+
4.0
18&Over NWO 4.0M Scott-PTC
Midwest		 W 18&Over NWO 4.0M Guy/Peiffer TTC
Midwest
Clyde Jeff Trumbull (3.93) 6-2
6-0		 Phil Dionyssiou (3.51)
sandeep kukreja (3.80)
Match: 4.10 Rating: 3.98
05/03/2016 D2 Adult 18+
4.0
18&Over NWO 4.0M Scott-PTC
Midwest		 W 18&Over NWO 4.0M Eilert/Swartzbeck-PTC
Midwest
Eric Stegman (3.89) 7-5
6-3		 Michael Perry (3.58)
Dean Nofzinger (3.65)
Match: 3.92 Rating: 3.92
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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