Statistical Analysis and Estimated Tennis Ratings to the 10,000th of a Point
Match History (2015) View Advanced Player Stats
William Chamberlin (San Rafael, CA)
Male 		4.5 S
12/13/2024
Estimated Dynamic Rating 4.0301 M
4/20/2025
Projected Year End Rating ------
----------
4.5 Rating Meter
Rating Meter
4.0001 - 4.5000
Recent Match History Current Rating History
2015 Overall Season
League/Level Total
Matches		 Win Loss Tie WPct Total
Sets		 Win Loss WPct Total
Games		 Win Loss WPct Defaults
Adult 18+ 3.5 5 5 0 0 100.0 10 10 0 100.0 69 60 9 87.0 0
Adult 40+ 3.5 5 5 0 0 100.0 10 10 0 100.0 83 62 21 74.7 0
Combo 6.5 4 3 1 0 75.0 10 7 3 70.0 78 46 32 59.0 0
Combo 7.5 5 4 1 0 80.0 10 8 2 80.0 87 55 32 63.2 0
Combo 8.5 4 1 3 0 25.0 8 2 6 25.0 70 31 39 44.3 0
Mixed 18+ 7.0 10 9 1 0 90.0 22 19 3 86.4 182 120 62 65.9 0
Mixed 18+ 8.0 2 1 1 0 50.0 5 2 3 40.0 34 14 20 41.2 0
Mixed 40+ 7.0 5 4 1 0 80.0 11 9 2 81.8 94 59 35 62.8 0
Total 40 32 8 0 80.0 86 67 19 77.9 697 447 250 64.1 0
Match Date League Team Court Partner Opponent(s) W/L Result Match Rating
12/12/2015 Combo
7.5		 RAFAEL RC CM7.5A
No California		 D1 Roland Davantes
(3.38) 		Michael Durphy
(-----)
Andrew Fremier
(3.34) 		W 6-3
6-3		 S -----
11/22/2015 Combo
7.5		 RAFAEL RC CM7.5A
No California		 D1 Doug Jones
(3.40) 		David Neagle
(3.54)
Jeffrey Kent
(3.83) 		L 6-3
6-4		 3.67 -----
11/15/2015 Combo
8.5		 RAFAEL RC CM8.5A
No California		 D3 Daniel Carlson
(4.10) 		Clark Omholt
(4.02)
Peter Olsen
(3.73) 		W 6-1
6-2		 3.99 -----
11/14/2015 Combo
7.5		 RAFAEL RC CM7.5A
No California		 D2 Sean Murphy
(3.25) 		Andreas Kohlbrenner
(3.55)
Carlos Lamas-Babbini
(3.49) 		W 6-1
6-2		 4.06 -----
11/08/2015 Combo
8.5		 RAFAEL RC CM8.5A
No California		 D3 James Wilson
(-----) 		John Macri
(3.97)
Chris Scott
(3.93) 		L 6-4
6-3		 S -----
10/18/2015 Combo
7.5		 RAFAEL RC CM7.5A
No California		 D1 Roland Davantes Jason Holmes

Vladimir Matyurin 		W 6-3
6-1		 ----- -----
10/16/2015 Combo
8.5		 RAFAEL RC CM8.5A
No California		 D1 Peter Bergman Randall Young

Brian Kneafsey 		L 6-2
6-4		 ----- -----
10/10/2015 Mixed 18+
7.0
Sectionals		 RAFAEL RC 18MX7.0B
No California		 D1 Erin Chamberlin Robert Stoecklin

Liz Bissell 		W 6-0
6-3		 ----- -----
10/10/2015 Mixed 18+
7.0
Sectionals		 RAFAEL RC 18MX7.0B
No California		 D1 Erin Chamberlin Roger Lambert

Melissa Thorn 		W 7-5
6-3		 ----- -----
10/09/2015 Mixed 18+
7.0
Sectionals		 RAFAEL RC 18MX7.0B
No California		 D1 Erin Chamberlin Edgar Benitez

Maricel Renigen 		W 7-6
6-3		 ----- -----
09/26/2015 Combo
8.5		 RAFAEL RC CM8.5A
No California		 D1 Jeff Marquis Jeff Babikian

Andre Mancl 		L 6-3
6-3		 ----- -----
09/26/2015 Combo
7.5		 RAFAEL RC CM7.5A
No California		 D1 David Hatch Klaus Schiess

Leszek Kotzian 		W 6-3
6-4		 ----- -----
09/25/2015 Mixed 18+
7.0		 RAFAEL RC 18MX7.0B
No California		 D2 Erin Chamberlin Maida Lynn

Jonathan Ivory 		W 7-6
7-5		 ----- -----
09/07/2015 Tournament
NM4.0d		 Hal Wagner Memorial Doubles Open S Peter Bergman Jeffery Birkenseer

Keith Merron 		L 6-3
6-1		 ----- -----
09/06/2015 Tournament
NM4.0d		 Hal Wagner Memorial Doubles Open Q Peter Bergman Chuck Spaulding

Christopher Ventris 		W 6-3
2-6
6-3		 ----- -----
09/05/2015 Tournament
NX4.0d		 Hal Wagner Memorial Doubles Open 16 Erin Chamberlin Beth Davis

Christopher Ventris 		L 6-3
6-3		 ----- -----
09/05/2015 Tournament
NM4.0d		 Hal Wagner Memorial Doubles Open 16 Peter Bergman Edwin Ferran

David Monson 		W 6-4
6-0		 ----- -----
09/04/2015 Tournament
NX4.0d		 Hal Wagner Memorial Doubles Open 32 Erin Chamberlin Michele Andrade

Dave Vinik 		W 6-3
6-7
6-1		 ----- -----
08/30/2015 Mixed 18+
7.0		 RAFAEL RC 18MX7.0B
No California		 D1 Erin Chamberlin Lisa Brayer

Erik Sherley 		W 6-1
6-2		 ----- -----
08/29/2015 Mixed 18+
7.0		 RAFAEL RC 18MX7.0B
No California		 D2 Susan Ginwala Nancy Nicolai

Lawrence Wright 		W 6-4
6-0		 ----- -----
08/23/2015 Mixed 18+
7.0		 RAFAEL RC 18MX7.0B
No California		 D1 Erin Chamberlin Karen Bolton

Karl Kaikinger 		W 6-1
6-2		 ----- -----
08/09/2015 Mixed 18+
8.0		 RAFAEL RC 18MX8.0A
No California		 D3 Jamie Papadimos Masoud Kermani

Sandy Brownstone 		W 6-2
2-6
1-0		 ----- -----
08/02/2015 Mixed 18+
7.0		 RAFAEL RC 18MX7.0B
No California		 D2 Erin Chamberlin Charles Spelman

Jennifer Koo 		W 6-4
3-6
1-0		 ----- -----
07/18/2015 Mixed 18+
7.0		 RAFAEL RC 18MX7.0B
No California		 D1 Carol Njus Janis Stadnicki

Doug Milani 		L 6-4
3-6
1-0		 ----- -----
07/18/2015 Mixed 18+
8.0		 RAFAEL RC 18MX8.0A
No California		 D1 Beth McCarthy Adam Jaffe

Caren Horstmeyer 		L 6-4
6-1		 ----- -----
07/05/2015 Mixed 18+
7.0		 RAFAEL RC 18MX7.0B
No California		 D3 Susan Ginwala Michael Burke

Maureen Tierney 		W 6-0
6-1		 ----- -----
06/26/2015 Adult 18+
3.5		 RAFAEL RC 18AM3.5A
No California		 D1 Roland Davantes Earl Johnson

Clifford McGuire 		W 6-1
6-0		 ----- -----
06/20/2015 Adult 18+
3.5		 RAFAEL RC 18AM3.5A
No California		 S1 Robert Mellett W 6-0
6-0		 ----- -----
05/03/2015 Adult 18+
3.5		 RAFAEL RC 18AM3.5A
No California		 S2 Erick Steinberg W 6-0
6-1		 ----- -----
04/26/2015 Adult 18+
3.5		 RAFAEL RC 18AM3.5A
No California		 D2 Sean Murphy Jason Suey

Lew Wiener 		W 6-2
6-1		 ----- -----
04/18/2015 Mixed 40+
7.0		 RAFAEL RC 40MX7.0A
No California		 D2 Erin Chamberlin Wendy Crowe

Bill Cascio 		L 5-7
6-3
1-0		 ----- -----
03/30/2015 Adult 18+
3.5		 RAFAEL RC 18AM3.5A
No California		 D1 Chris Beard Matthew Lennon

Van Scotto 		W 6-0
6-4		 ----- -----
03/28/2015 Mixed 40+
7.0		 RAFAEL RC 40MX7.0A
No California		 D2 Alice Pidgeon Rachel Ogdie

Carnet Williams 		W 6-3
6-4		 ----- -----
03/22/2015 Adult 40+
3.5		 RAFAEL RC 40AM3.5A
No California		 D2 Willam Lukach Mark Gradney

Todd Stevenot 		W 6-3
6-1		 ----- -----
03/07/2015 Adult 40+
3.5		 RAFAEL RC 40AM3.5A
No California		 D2 Gary Berringer Bob Safier

David Wong 		W 7-5
6-2		 ----- -----
02/28/2015 Adult 40+
3.5		 RAFAEL RC 40AM3.5A
No California		 D1 Roland Davantes Grant Davies

David Wong 		W 6-2
6-1		 ----- -----
02/22/2015 Combo
6.5
Districts		 RAFAEL RC CM6.5A
No California		 D1 Roland Davantes Aranesh Chandra

Shawn Fuson 		W 7-6
6-3		 ----- -----
02/21/2015 Combo
6.5
Districts		 RAFAEL RC CM6.5A
No California		 D1 Roland Davantes Greg Lanctot

CJ Butcher 		L 6-4
5-7
1-0		 ----- -----
02/20/2015 Combo
6.5
Districts		 RAFAEL RC CM6.5A
No California		 D3 Roland Davantes Matt Von Savoye

Rolando Garcia 		W 6-2
6-0		 ----- -----
01/31/2015 Adult 40+
3.5		 RAFAEL RC 40AM3.5A
No California		 D1 Willam Lukach Donald Torre

Stevens Manning 		W 7-5
6-2		 ----- -----
01/25/2015 Mixed 40+
7.0		 RAFAEL RC 40MX7.0A
No California		 D1 Kim Stempel Craig Hughes

Suzanne Gogna 		W 6-0
6-2		 ----- -----
01/18/2015 Mixed 40+
7.0		 RAFAEL RC 40MX7.0A
No California		 D1 Kim Stempel Alexandria Quam

Dino Tomelden 		W 6-2
6-3		 ----- -----
01/17/2015 Adult 40+
3.5		 RAFAEL RC 40AM3.5A
No California		 D2 Paul Ingels Gary Chan

Murray Dunn 		W 6-0
6-0		 ----- -----
01/11/2015 Mixed 40+
7.0		 RAFAEL RC 40MX7.0A
No California		 D2 Carol Njus Don McInnes

Robin Allen 		W 7-5
6-4		 ----- -----
01/10/2015 Combo
6.5		 RAFAEL RC CM6.5A
No California		 D2 Roland Davantes Keith Passaretti

Rich Taber 		W 6-3
3-6
1-0		 ----- -----
12/12/2015 D1 Combo
7.5
RAFAEL RC CM7.5A
No California		 W CANON S and TC CM7.5A
No California
Roland Davantes (3.38) 6-3
6-3		 Michael Durphy (-----)
Andrew Fremier (3.34)
Match: S Rating: -----
11/22/2015 D1 Combo
7.5
RAFAEL RC CM7.5A
No California		 L MARIN TC CM7.5A
No California
Doug Jones (3.40) 6-3
6-4		 David Neagle (3.54)
Jeffrey Kent (3.83)
Match: 3.67 Rating: -----
11/15/2015 D3 Combo
8.5
RAFAEL RC CM8.5A
No California		 W NOVATO TC/PIONEER PK CM8.5A
No California
Daniel Carlson (4.10) 6-1
6-2		 Clark Omholt (4.02)
Peter Olsen (3.73)
Match: 3.99 Rating: -----
11/14/2015 D2 Combo
7.5
RAFAEL RC CM7.5A
No California		 W LUCAS VALLEY CM7.5A
No California
Sean Murphy (3.25) 6-1
6-2		 Andreas Kohlbrenner (3.55)
Carlos Lamas-Babbini (3.49)
Match: 4.06 Rating: -----
11/08/2015 D3 Combo
8.5
RAFAEL RC CM8.5A
No California		 L HARBOR PT CM8.5A
No California
James Wilson (-----) 6-4
6-3		 John Macri (3.97)
Chris Scott (3.93)
Match: S Rating: -----
10/18/2015 D1 Combo
7.5
RAFAEL RC CM7.5A
No California		 W MARIN TC CM7.5A
No California
Roland Davantes 6-3
6-1		 Jason Holmes
Vladimir Matyurin
Match: ----- Rating: -----
10/16/2015 D1 Combo
8.5
RAFAEL RC CM8.5A
No California		 L MILL VALLEY CM8.5A
No California
Peter Bergman 6-2
6-4		 Randall Young
Brian Kneafsey
Match: ----- Rating: -----
10/10/2015 D1 Mixed 18+
7.0
Sectionals
RAFAEL RC 18MX7.0B
No California		 W ZEPHYR COVE 18MX7.0A
No California
Erin Chamberlin 6-0
6-3		 Robert Stoecklin
Liz Bissell
Match: ----- Rating: -----
10/10/2015 D1 Mixed 18+
7.0
Sectionals
RAFAEL RC 18MX7.0B
No California		 W LANEY TA/LANEY COLLEGE 18MX7.0B
No California
Erin Chamberlin 7-5
6-3		 Roger Lambert
Melissa Thorn
Match: ----- Rating: -----
10/09/2015 D1 Mixed 18+
7.0
Sectionals
RAFAEL RC 18MX7.0B
No California		 W GREATER VALLEJO TA/AMADOR COURTS 18MX7.0A
No California
Erin Chamberlin 7-6
6-3		 Edgar Benitez
Maricel Renigen
Match: ----- Rating: -----
09/26/2015 D1 Combo
8.5
RAFAEL RC CM8.5A
No California		 L TIBURON PEN C CM8.5A
No California
Jeff Marquis 6-3
6-3		 Jeff Babikian
Andre Mancl
Match: ----- Rating: -----
09/26/2015 D1 Combo
7.5
RAFAEL RC CM7.5A
No California		 W LUCAS VALLEY CM7.5A
No California
David Hatch 6-3
6-4		 Klaus Schiess
Leszek Kotzian
Match: ----- Rating: -----
09/25/2015 D2 Mixed 18+
7.0
RAFAEL RC 18MX7.0B
No California		 W MARINWOOD COMM CTR 18MX7.0A
No California
Erin Chamberlin 7-6
7-5		 Maida Lynn
Jonathan Ivory
Match: ----- Rating: -----
Hal Wagner Memorial Doubles Open
09/07/2015 S Tournament
NM4.0d
L
Peter Bergman 6-3
6-1		 Jeffery Birkenseer
Keith Merron
Match: ----- Rating: -----
Hal Wagner Memorial Doubles Open
09/06/2015 Q Tournament
NM4.0d
W
Peter Bergman 6-3
2-6
6-3		 Chuck Spaulding
Christopher Ventris
Match: ----- Rating: -----
Hal Wagner Memorial Doubles Open
09/05/2015 16 Tournament
NX4.0d
L
Erin Chamberlin 6-3
6-3		 Beth Davis
Christopher Ventris
Match: ----- Rating: -----
Hal Wagner Memorial Doubles Open
09/05/2015 16 Tournament
NM4.0d
W
Peter Bergman 6-4
6-0		 Edwin Ferran
David Monson
Match: ----- Rating: -----
Hal Wagner Memorial Doubles Open
09/04/2015 32 Tournament
NX4.0d
W
Erin Chamberlin 6-3
6-7
6-1		 Michele Andrade
Dave Vinik
Match: ----- Rating: -----
08/30/2015 D1 Mixed 18+
7.0
RAFAEL RC 18MX7.0B
No California		 W ROLLING HILLS 18MX7.0A
No California
Erin Chamberlin 6-1
6-2		 Lisa Brayer
Erik Sherley
Match: ----- Rating: -----
08/29/2015 D2 Mixed 18+
7.0
RAFAEL RC 18MX7.0B
No California		 W NOVATO TC/PIONEER PK 18MX7.0A
No California
Susan Ginwala 6-4
6-0		 Nancy Nicolai
Lawrence Wright
Match: ----- Rating: -----
08/23/2015 D1 Mixed 18+
7.0
RAFAEL RC 18MX7.0B
No California		 W MARINWOOD COMM CTR 18MX7.0B
No California
Erin Chamberlin 6-1
6-2		 Karen Bolton
Karl Kaikinger
Match: ----- Rating: -----
08/09/2015 D3 Mixed 18+
8.0
RAFAEL RC 18MX8.0A
No California		 W MARIN CC 18MX8.0A
No California
Jamie Papadimos 6-2
2-6
1-0		 Masoud Kermani
Sandy Brownstone
Match: ----- Rating: -----
08/02/2015 D2 Mixed 18+
7.0
RAFAEL RC 18MX7.0B
No California		 W BAY CLUB ROSS VALLEY 18MX7.0A
No California
Erin Chamberlin 6-4
3-6
1-0		 Charles Spelman
Jennifer Koo
Match: ----- Rating: -----
07/18/2015 D1 Mixed 18+
7.0
RAFAEL RC 18MX7.0B
No California		 L MARIN TC 18MX7.0A
No California
Carol Njus 6-4
3-6
1-0		 Janis Stadnicki
Doug Milani
Match: ----- Rating: -----
07/18/2015 D1 Mixed 18+
8.0
RAFAEL RC 18MX8.0A
No California		 L MT TAM RC 18MX8.0A
No California
Beth McCarthy 6-4
6-1		 Adam Jaffe
Caren Horstmeyer
Match: ----- Rating: -----
07/05/2015 D3 Mixed 18+
7.0
RAFAEL RC 18MX7.0B
No California		 W MARIN TC 18MX7.0B
No California
Susan Ginwala 6-0
6-1		 Michael Burke
Maureen Tierney
Match: ----- Rating: -----
06/26/2015 D1 Adult 18+
3.5
RAFAEL RC 18AM3.5A
No California		 W SCOTT VALLEY 18AM3.5A
No California
Roland Davantes () 6-1
6-0		 Earl Johnson
Clifford McGuire
Match: ----- Rating: -----
06/20/2015 S1 Adult 18+
3.5
RAFAEL RC 18AM3.5A
No California		 W MILL VALLEY 18AM3.5A
No California
6-0
6-0		 Robert Mellett
Match: ----- Rating: -----
05/03/2015 S2 Adult 18+
3.5
RAFAEL RC 18AM3.5A
No California		 W MILL VALLEY 18AM3.5A
No California
6-0
6-1		 Erick Steinberg
Match: ----- Rating: -----
04/26/2015 D2 Adult 18+
3.5
RAFAEL RC 18AM3.5A
No California		 W HARBOR PT 18AM3.5A
No California
Sean Murphy () 6-2
6-1		 Jason Suey
Lew Wiener
Match: ----- Rating: -----
04/18/2015 D2 Mixed 40+
7.0
RAFAEL RC 40MX7.0A
No California		 L MILL VALLEY 40MX7.0A
No California
Erin Chamberlin 5-7
6-3
1-0		 Wendy Crowe
Bill Cascio
Match: ----- Rating: -----
03/30/2015 D1 Adult 18+
3.5
RAFAEL RC 18AM3.5A
No California		 W ROLLING HILLS 18AM3.5B
No California
Chris Beard () 6-0
6-4		 Matthew Lennon
Van Scotto
Match: ----- Rating: -----
03/28/2015 D2 Mixed 40+
7.0
RAFAEL RC 40MX7.0A
No California		 W MT TAM RC 40MX7.0A
No California
Alice Pidgeon 6-3
6-4		 Rachel Ogdie
Carnet Williams
Match: ----- Rating: -----
03/22/2015 D2 Adult 40+
3.5
RAFAEL RC 40AM3.5A
No California		 W ROLLING HILLS 40AM3.5A
No California
Willam Lukach () 6-3
6-1		 Mark Gradney
Todd Stevenot
Match: ----- Rating: -----
03/07/2015 D2 Adult 40+
3.5
RAFAEL RC 40AM3.5A
No California		 W HARBOR PT 40AM3.5A
No California
Gary Berringer () 7-5
6-2		 Bob Safier
David Wong
Match: ----- Rating: -----
02/28/2015 D1 Adult 40+
3.5
RAFAEL RC 40AM3.5A
No California		 W MARIN TC 40AM3.5A
No California
Roland Davantes () 6-2
6-1		 Grant Davies
David Wong
Match: ----- Rating: -----
02/22/2015 D1 Combo
6.5
Districts
RAFAEL RC CM6.5A
No California		 W DIAMOND HILLS CM6.5A
No California
Roland Davantes 7-6
6-3		 Aranesh Chandra
Shawn Fuson
Match: ----- Rating: -----
02/21/2015 D1 Combo
6.5
Districts
RAFAEL RC CM6.5A
No California		 L COURTSIDE CM6.5A
No California
Roland Davantes 6-4
5-7
1-0		 Greg Lanctot
CJ Butcher
Match: ----- Rating: -----
02/20/2015 D3 Combo
6.5
Districts
RAFAEL RC CM6.5A
No California		 W GOLD RIVER RC CM6.5B
No California
Roland Davantes 6-2
6-0		 Matt Von Savoye
Rolando Garcia
Match: ----- Rating: -----
01/31/2015 D1 Adult 40+
3.5
RAFAEL RC 40AM3.5A
No California		 W PIONEER PK 40AM3.5A
No California
Willam Lukach () 7-5
6-2		 Donald Torre
Stevens Manning
Match: ----- Rating: -----
01/25/2015 D1 Mixed 40+
7.0
RAFAEL RC 40MX7.0A
No California		 W MARIN YACHT 40MX7.0A
No California
Kim Stempel 6-0
6-2		 Craig Hughes
Suzanne Gogna
Match: ----- Rating: -----
01/18/2015 D1 Mixed 40+
7.0
RAFAEL RC 40MX7.0A
No California		 W LUCAS VALLEY 40MX7.0A
No California
Kim Stempel 6-2
6-3		 Alexandria Quam
Dino Tomelden
Match: ----- Rating: -----
01/17/2015 D2 Adult 40+
3.5
RAFAEL RC 40AM3.5A
No California		 W TIBURON PEN C 40AM3.5B
No California
Paul Ingels () 6-0
6-0		 Gary Chan
Murray Dunn
Match: ----- Rating: -----
01/11/2015 D2 Mixed 40+
7.0
RAFAEL RC 40MX7.0A
No California		 W ROLLING HILLS 40MX7.0A
No California
Carol Njus 7-5
6-4		 Don McInnes
Robin Allen
Match: ----- Rating: -----
01/10/2015 D2 Combo
6.5
RAFAEL RC CM6.5A
No California		 W MARIN TC CM6.5A
No California
Roland Davantes 6-3
3-6
1-0		 Keith Passaretti
Rich Taber
Match: ----- Rating: -----
Glossary
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S Self rated or unrated player involved in match so no match rating calculated for current player.
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