Statistical Analysis and Estimated Tennis Ratings to the 10,000th of a Point
Match History (2019) View Advanced Player Stats
Joel Schaffer (Orinda, CA)
Male 		4.0 C
12/31/2023
Estimated Dynamic Rating 3.4877
6/2/2024
Projected Year End Rating ------
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4.0 Rating Meter
Rating Meter
3.5001 - 4.0000
Recent Match History Current Rating History
2019 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 2 0 2 0 0.0 5 1 4 20.0 34 12 22 35.3 0
Adult 40+ 4.0 7 2 5 0 28.6 16 5 11 31.3 144 64 80 44.4 0
Adult 55+ 8.0 8 3 5 0 37.5 17 5 12 29.4 160 67 93 41.9 1
Adult 65+ 8.0 2 0 2 0 0.0 4 0 4 0.0 46 20 26 43.5 0
Combo 8.5 2 0 2 0 0.0 6 2 4 33.3 33 17 16 51.5 0
Total 21 5 16 0 23.8 48 13 35 27.1 417 180 237 43.2 1
Match Date League Team Court Partner Opponent(s) W/L Result Match Rating
11/16/2019 Adult 40+
4.0		 DANVILLE TC/MONTE VISTA HS 40AM4.0B
No California		 D2 Ken Chong
(3.71) 		Eric Berryman
(3.80)
Anupam Rajan
(3.54) 		L 7-5
6-4		 3.52 3.58
10/22/2019 Combo
8.5		 SLEEPY HOLLOW CM8.5A
No California		 D3 Akiva Elias
(4.20) 		Jay Cattermole
(3.73)
Greg Longstreet
(4.30) 		L 1-6
6-2
1-0		 3.72 -----
10/05/2019 Combo
8.5		 SLEEPY HOLLOW CM8.5A
No California		 D2 Peter Sullivan
(4.28) 		Christopher Booth
(4.11)
Johnny Campos
(3.83) 		L 6-3
1-6
1-0		 3.66 -----
09/23/2019 Adult 40+
4.0		 ORINDA CC 40AM4.0A
No California		 D3 Khozema Shipchandler
(3.51) 		Nicholas Mastrangelo
(3.59)
Thomas McNichol
(3.46) 		L 3-6
6-4
1-0		 3.61 3.66
09/21/2019 Adult 55+
8.0
Sectionals		 WALNUT CREEK 55AM8.0A
No California		 D3 Ernest Schulze
(3.56) 		Robert Gasbarro
(4.00)
Kerry Smyth
(3.95) 		L 6-2
6-0		 3.62 3.62
08/31/2019 Adult 55+
8.0		 DANVILLE TC/MONTE VISTA HS 55AM8.0A
No California		 D3 Dexter Loo
(-----) 		Default W 6-0
6-0		 ----- -----
08/19/2019 Adult 55+
8.0		 DANVILLE TC/MONTE VISTA HS 55AM8.0A
No California		 D1 Paul Krout
(3.60) 		Mike Van Doorn
(3.81)
John Ehlert
(3.89) 		L 6-2
6-2		 3.59 3.62
08/10/2019 Adult 55+
8.0		 DANVILLE TC/MONTE VISTA HS 55AM8.0A
No California		 D2 Paul Krout
(3.57) 		Guruprasad Rao
(3.68)
James Theriault
(3.78) 		L 7-5
6-4		 3.65 3.65
08/03/2019 Adult 55+
8.0		 WALNUT CREEK 55AM8.0A
No California		 D3 Ernest Schulze
(3.64) 		David Bressler
(3.40)
Daniel Leung
(3.43) 		W 7-6
4-5		 3.42 3.60
07/28/2019 Adult 55+
8.0		 DANVILLE TC/MONTE VISTA HS 55AM8.0A
No California		 D1 Paul Krout
(3.59) 		Ronald Santilli
(3.55)
Richard W Wilson
(3.60) 		W 3-6
7-5
1-0		 3.63 3.65
07/21/2019 Adult 55+
8.0		 WALNUT CREEK 55AM8.0A
No California		 D1 George Braue
(3.29) 		Kevin Eyl
(3.55)
Saied Nazeri
(3.55) 		W 6-4
6-3		 3.87 3.70
07/20/2019 Adult 55+
8.0		 DANVILLE TC/MONTE VISTA HS 55AM8.0A
No California		 D2 Paul Krout
(3.62) 		Mark Wagner
(3.71)
David Kent
(3.67) 		L 7-5
7-5		 3.60 3.64
06/22/2019 Adult 18+
4.0		 ORINDA CC 18AM4.0A
No California		 D3 Michael Evans
(3.41) 		Huan Ta
(3.66)
Jeff Richards
(3.74) 		L 6-2
6-0		 3.45 3.62
06/13/2019 Adult 55+
8.0		 DANVILLE TC/MONTE VISTA HS 55AM8.0A
No California		 D2 Helio Sakaya
(3.55) 		Dean Allen
(3.76)
Bill Lee
(3.87) 		L 7-5
6-3		 3.74 3.68
04/25/2019 Adult 65+
8.0		 WALNUT CREEK RC/WALNUT CREEK 65AM8.0A
No California		 D1 George Braue
(3.29) 		Rich Green
(3.45)
Stephen Hoverman
(3.52) 		L 6-4
6-4		 S 3.68
04/10/2019 Adult 18+
4.0		 ORINDA CC 18AM4.0A
No California		 D2 Alton Schmitt
(3.78) 		Kamal Mistry
(3.80)
Kerwin Allen
(3.74) 		L 3-6
6-4
1-0		 3.70 3.68
04/09/2019 Adult 65+
8.0		 WALNUT CREEK RC/WALNUT CREEK 65AM8.0A
No California		 D1 Irwin Cohen
(3.45) 		Lee Otsuki
(3.52)
Joe Olson
(3.36) 		L 7-6
7-6		 3.52 3.64
03/31/2019 Adult 40+
4.0		 DANVILLE TC/MONTE VISTA HS 40AM4.0B
No California		 D3 Darrell Ghysels
(3.70) 		Michael Dungan
(3.53)
Andrew Stack
(3.51) 		W 6-4
6-2		 S 3.69
03/30/2019 Adult 40+
4.0		 DANVILLE TC/MONTE VISTA HS 40AM4.0B
No California		 D1 Michael O'Hara
(3.72) 		Peter Lowe
(4.07)
Venkateshan Sundaram
(3.80) 		L 6-4
6-2		 3.72 3.69
03/23/2019 Adult 40+
4.0		 DANVILLE TC/MONTE VISTA HS 40AM4.0B
No California		 D2 Bob Benz
(3.53) 		Reza Nazari
(3.93)
Dean Allen
(3.88) 		L 6-1
7-5		 3.75 3.69
03/19/2019 Adult 40+
4.0		 DANVILLE TC/MONTE VISTA HS 40AM4.0B
No California		 D1 Michael O'Hara
(3.68) 		Vishal Saboo
(4.02)
Eric Berryman
(3.96) 		L 7-6
6-1		 3.81 3.69
01/13/2019 Adult 40+
4.0		 ORINDA CC 40AM4.0A
No California		 D2 Jeffrey Maier
(3.51) 		Kevin Kyono
(3.54)
Scott Philipp
(3.80) 		W 7-6
6-7
1-0		 3.75 3.66
11/16/2019 D2 Adult 40+
4.0
DANVILLE TC/MONTE VISTA HS 40AM4.0B
No California		 L FREMONT TC 40AM4.0A
No California
Ken Chong (3.71) 7-5
6-4		 Eric Berryman (3.80)
Anupam Rajan (3.54)
Match: 3.52 Rating: 3.58
10/22/2019 D3 Combo
8.5
SLEEPY HOLLOW CM8.5A
No California		 L ROUND HILL CC CM8.5A
No California
Akiva Elias (4.20) 1-6
6-2
1-0		 Jay Cattermole (3.73)
Greg Longstreet (4.30)
Match: 3.72 Rating: -----
10/05/2019 D2 Combo
8.5
SLEEPY HOLLOW CM8.5A
No California		 L VALLEY VISTA RC/VVRC COURTS CM8.5A
No California
Peter Sullivan (4.28) 6-3
1-6
1-0		 Christopher Booth (4.11)
Johnny Campos (3.83)
Match: 3.66 Rating: -----
09/23/2019 D3 Adult 40+
4.0
ORINDA CC 40AM4.0A
No California		 L VALLEY VISTA RC/VVRC COURTS 40AM4.0A
No California
Khozema Shipchandler (3.51) 3-6
6-4
1-0		 Nicholas Mastrangelo (3.59)
Thomas McNichol (3.46)
Match: 3.61 Rating: 3.66
09/21/2019 D3 Adult 55+
8.0
Sectionals
WALNUT CREEK 55AM8.0A
No California		 L BROADSTONE RC 55AM8.0A
No California
Ernest Schulze (3.56) 6-2
6-0		 Robert Gasbarro (4.00)
Kerry Smyth (3.95)
Match: 3.62 Rating: 3.62
08/31/2019 D3 Adult 55+
8.0
DANVILLE TC/MONTE VISTA HS 55AM8.0A
No California		 W BLACKHAWK CC 55AM8.0A
No California
Dexter Loo (-----) 6-0
6-0		 Default
Match: ----- Rating: -----
08/19/2019 D1 Adult 55+
8.0
DANVILLE TC/MONTE VISTA HS 55AM8.0A
No California		 L PLEASANTON 55AM8.0A
No California
Paul Krout (3.60) 6-2
6-2		 Mike Van Doorn (3.81)
John Ehlert (3.89)
Match: 3.59 Rating: 3.62
08/10/2019 D2 Adult 55+
8.0
DANVILLE TC/MONTE VISTA HS 55AM8.0A
No California		 L PLEASANTON 55AM8.0B
No California
Paul Krout (3.57) 7-5
6-4		 Guruprasad Rao (3.68)
James Theriault (3.78)
Match: 3.65 Rating: 3.65
08/03/2019 D3 Adult 55+
8.0
WALNUT CREEK 55AM8.0A
No California		 W PINOLE PK 55AM8.0A
No California
Ernest Schulze (3.64) 7-6
4-5		 David Bressler (3.40)
Daniel Leung (3.43)
Match: 3.42 Rating: 3.60
07/28/2019 D1 Adult 55+
8.0
DANVILLE TC/MONTE VISTA HS 55AM8.0A
No California		 W BLACKHAWK CC 55AM8.0A
No California
Paul Krout (3.59) 3-6
7-5
1-0		 Ronald Santilli (3.55)
Richard W Wilson (3.60)
Match: 3.63 Rating: 3.65
07/21/2019 D1 Adult 55+
8.0
WALNUT CREEK 55AM8.0A
No California		 W MORAGA CC 55AM8.0A
No California
George Braue (3.29) 6-4
6-3		 Kevin Eyl (3.55)
Saied Nazeri (3.55)
Match: 3.87 Rating: 3.70
07/20/2019 D2 Adult 55+
8.0
DANVILLE TC/MONTE VISTA HS 55AM8.0A
No California		 L PLEASANTON 55AM8.0A
No California
Paul Krout (3.62) 7-5
7-5		 Mark Wagner (3.71)
David Kent (3.67)
Match: 3.60 Rating: 3.64
06/22/2019 D3 Adult 18+
4.0
ORINDA CC 18AM4.0A
No California		 L PINOLE PK 18AM4.0A
No California
Michael Evans (3.41) 6-2
6-0		 Huan Ta (3.66)
Jeff Richards (3.74)
Match: 3.45 Rating: 3.62
06/13/2019 D2 Adult 55+
8.0
DANVILLE TC/MONTE VISTA HS 55AM8.0A
No California		 L PLEASANTON 55AM8.0A
No California
Helio Sakaya (3.55) 7-5
6-3		 Dean Allen (3.76)
Bill Lee (3.87)
Match: 3.74 Rating: 3.68
04/25/2019 D1 Adult 65+
8.0
WALNUT CREEK RC/WALNUT CREEK 65AM8.0A
No California		 L BERKELEY TC 65AM8.0A
No California
George Braue (3.29) 6-4
6-4		 Rich Green (3.45)
Stephen Hoverman (3.52)
Match: S Rating: 3.68
04/10/2019 D2 Adult 18+
4.0
ORINDA CC 18AM4.0A
No California		 L VALLEY VISTA RC/VVRC COURTS 18AM4.0A
No California
Alton Schmitt (3.78) 3-6
6-4
1-0		 Kamal Mistry (3.80)
Kerwin Allen (3.74)
Match: 3.70 Rating: 3.68
04/09/2019 D1 Adult 65+
8.0
WALNUT CREEK RC/WALNUT CREEK 65AM8.0A
No California		 L ROUND HILL CC 65AM8.0A
No California
Irwin Cohen (3.45) 7-6
7-6		 Lee Otsuki (3.52)
Joe Olson (3.36)
Match: 3.52 Rating: 3.64
03/31/2019 D3 Adult 40+
4.0
DANVILLE TC/MONTE VISTA HS 40AM4.0B
No California		 W BAY TREES PK 40AM4.0A
No California
Darrell Ghysels (3.70) 6-4
6-2		 Michael Dungan (3.53)
Andrew Stack (3.51)
Match: S Rating: 3.69
03/30/2019 D1 Adult 40+
4.0
DANVILLE TC/MONTE VISTA HS 40AM4.0B
No California		 L PLEASANTON 40AM4.0C
No California
Michael O'Hara (3.72) 6-4
6-2		 Peter Lowe (4.07)
Venkateshan Sundaram (3.80)
Match: 3.72 Rating: 3.69
03/23/2019 D2 Adult 40+
4.0
DANVILLE TC/MONTE VISTA HS 40AM4.0B
No California		 L PLEASANTON 40AM4.0B
No California
Bob Benz (3.53) 6-1
7-5		 Reza Nazari (3.93)
Dean Allen (3.88)
Match: 3.75 Rating: 3.69
03/19/2019 D1 Adult 40+
4.0
DANVILLE TC/MONTE VISTA HS 40AM4.0B
No California		 L FREMONT TC 40AM4.0A
No California
Michael O'Hara (3.68) 7-6
6-1		 Vishal Saboo (4.02)
Eric Berryman (3.96)
Match: 3.81 Rating: 3.69
01/13/2019 D2 Adult 40+
4.0
ORINDA CC 40AM4.0A
No California		 W WALNUT CREEK RC/WALNUT CREEK 40AM4.0B
No California
Jeffrey Maier (3.51) 7-6
6-7
1-0		 Kevin Kyono (3.54)
Scott Philipp (3.80)
Match: 3.75 Rating: 3.66
Glossary
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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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