William Chamberlin

NTRP rating 4.0C · 8 teams in 2026

Level

Desk level 4.05

The level is a Desk level as of the data run. It is The Tennis Desk's estimate of how the player is playing now, on the NTRP scale to two decimals. It is not an NTRP rating. The small chart beside the level is the rated lines in 2026.

Record

Year	Lines	Won-lost	Singles	Doubles
2026	26	15-11	—	15-11
2025	29	11-18	—	11-18
2024	13	4-9	—	4-9
2023	2	0-2	—	0-2
2022	15	6-9	—	6-9

League	Year	Won-lost
Adult 18 & Over Mens 4.0	2026	3-2
Adult 40 & Over Mens 4.0 1	2026	1-0
Adult 40 & Over Mens 4.0 2	2026	6-1
Adult 40 & Over Mens 4.5	2026	0-2
Combo Mens League 8.5	2026	0-1
Marin Mixed 40 & Over 8.0 scorecards	2026	3-2
Mixed 18 & Over 8.0	2026	1-2
Mixed 40 & Over 7.0 1	2026	1-1
Adult 18 & Over Mens 4.5	2025	0-5
Adult 40 & Over Mens 4.5	2025	0-2
Combo Mens League 8.5	2025	2-3
Mixed 18 & Over 8.0	2025	2-0
Mixed 18 & Over 9.0	2025	3-3
Mixed 40 & Over 8.0	2025	4-1
Mixed 40 & Over 9.0	2025	0-4
Combo Mens League 8.5	2024	2-5
Mixed 18 & Over 8.0	2024	2-1
Mixed 40 & Over 8.0	2024	0-3
Mixed 40 & Over 9.0	2023	0-2
Adult 40 & Over Mens 4.5	2022	1-1
Combo Mens League 8.5	2022	4-0
Mixed 18 & Over 8.0	2022	1-2
Mixed 18 & Over 9.0	2022	0-6

Teams

2026

RAFAEL RC · Adult 18 & Over Mens 4.0 · NTRP rating 4.0C · roster record 3-2 in 5 lines
RAFAEL RC · Mixed 18 & Over 8.0 · NTRP rating 4.0C · roster record 1-2 in 3 lines
RAFAEL RC · Adult 40 & Over Mens 4.0 2 · NTRP rating 4.0C · roster record 7-1 in 8 lines
RAFAEL RC · Mixed 40 & Over 7.0 1 · NTRP rating 4.0C · roster record 1-1 in 2 lines
RAFAEL RC · Mixed 40 & Over 8.0 · NTRP rating 4.0C · roster record 3-2 in 5 lines
RAFAEL RC/AWHS · Adult 40 & Over Mens 4.5 · NTRP rating 4.0C · roster record 0-2 in 2 lines
RAFAEL RC · Combo Mens League 7.5 · NTRP rating 4.0C · no line yet
RAFAEL RC · Combo Mens League 8.5 · NTRP rating 4.0C · roster record 0-1 in 1 line

2025

FLYTE RC · Adult 40 & Over Mens 4.5 · NTRP rating 4.5s · roster record 0-2 in 2 lines
MARIN TC · Adult 18 & Over Mens 4.5 · NTRP rating 4.5s · roster record 0-5 in 5 lines
RAFAEL RC · Mixed 18 & Over 8.0 · NTRP rating 4.5s · roster record 2-0 in 2 lines
RAFAEL RC · Mixed 18 & Over 9.0 · NTRP rating 4.5s · roster record 3-3 in 6 lines
RAFAEL RC · Mixed 40 & Over 8.0 · NTRP rating 4.5s · roster record 4-1 in 5 lines
RAFAEL RC · Mixed 40 & Over 9.0 · NTRP rating 4.5s · roster record 0-4 in 4 lines
RAFAEL RC · Combo Mens League 8.5 · NTRP rating 4.5s · roster record 2-3 in 5 lines

2024

RAFAEL RC · Mixed 18 & Over 8.0 · NTRP rating 4.5C · roster record 2-1 in 3 lines
RAFAEL RC · Mixed 40 & Over 8.0 · NTRP rating 4.5C · roster record 0-3 in 3 lines
RAFAEL RC · Combo Mens League 8.5 · NTRP rating 4.5C · roster record 2-5 in 7 lines

2023

RAFAEL RC · Mixed 40 & Over 9.0 · NTRP rating 4.5C · roster record 0-2 in 2 lines

2022

MARIN TC · Adult 40 & Over Mens 4.5 · NTRP rating 4.5C · roster record 1-1 in 2 lines
MARIN TC · Combo Mens League 8.5 · NTRP rating 4.5C · roster record 4-0 in 4 lines
RAFAEL RC · Mixed 18 & Over 8.0 · NTRP rating 4.5C · roster record 1-2 in 3 lines
RAFAEL RC · Mixed 18 & Over 9.0 · NTRP rating 4.5C · roster record 0-6 in 6 lines

Match log

Team match	Partner	Opponents
August 29, 2026 · Doubles 2L6-4, 6-2
ROHNERT PK TC/MAGNOLIA/M PK v RAFAEL RC Combo Mens League 8.5	Jason Bousquet	Bryan Arbios, Tom Kincaid
August 14, 2026 · Doubles 1L6-4, 7-6
SCOTT VALLEY v RAFAEL RC Marin Mixed 40 & Over 8.0 scorecards	Sharon Klein	Joe Gulash, Laura Spence
July 12, 2026 · Doubles 1W6-7, 6-3, 1-0
RAFAEL RC v NOVATO TC/PIONEER PK Marin Mixed 40 & Over 8.0 scorecards	Sharon Klein	Alima Connan, Zach Hancock
July 10, 2026 · Doubles 3W4-6, 6-3, 1-0
ROLLING HILLS v RAFAEL RC Marin Mixed 40 & Over 8.0 scorecards	Sarah Hoffman	Susan Bell-Warner, Mark Latimer
July 5, 2026 · Doubles 1W6-4, 6-2
RAFAEL RC v MARIN TC Marin Mixed 40 & Over 8.0 scorecards	Sharon Klein	Jennifer Doucette, Jody Osterweil
June 22, 2026 · Doubles 1L6-2, 6-2
ROLLING HILLS 40MX7.0A 1 v RAFAEL RC 40MX7.0B 1 Mixed 40 & Over 7.0 1	Kelly Schroth	Carly Daniels, Ethan Daniels
June 21, 2026 · Doubles 1L7-6, 6-3
HARBOR PT v RAFAEL RC Marin Mixed 40 & Over 8.0 scorecards	Eileen Benson	Josh Jaffe, Erika LaMarch
June 20, 2026 · Doubles 1W3-6, 6-2, 1-0
RAFAEL RC 40MX7.0B 1 v SCOTT VALLEY 40MX7.0A 1 Mixed 40 & Over 7.0 1	Patty Beach	Jerry Labay, Sharon McDaniel
June 14, 2026 · Doubles 1W6-3, 6-1
BOYLE PK v RAFAEL RC Adult 18 & Over Mens 4.0	Thomas Chang	Volodymyr Bosiuk, Jacob Colvin
June 6, 2026 · Doubles 1L6-1, 6-1
PRIORY TC v RAFAEL RC Adult 18 & Over Mens 4.0	Michael S Rice	Jason Lytz, Tim Rose
May 31, 2026 · Doubles 1W6-4, 6-1
RAFAEL RC v MT TAM RC Adult 18 & Over Mens 4.0	Sean Raymond	Juanito Guzman, David Thomas
May 16, 2026 · Doubles 1 · SectionalsW1-6, 6-2, 1-0
MISSION HILLS 40AM4.0A [Mission Hills ] 1 v RAFAEL RC 40AM4.0A 1 Adult 40 & Over Mens 4.0 2	Michael Grady	Andrew Huang, Ryan Low
May 16, 2026 · Doubles 1 · SectionalsL6-3, 6-1
RAFAEL RC 40AM4.0A 2 v MOUNTAIN VIEW TC/RENGSTORFF PK 40AM4.0B 2 Adult 40 & Over Mens 4.0 2	Michael S Rice	Srikant Kuppa, Nand Jha
May 15, 2026 · Doubles 1 · SectionalsW6-4, 6-3
RAFAEL RC 40AM4.0A 2 v BAY CLUB SANTA CLARA 40AM4.0A 2 Adult 40 & Over Mens 4.0 2	Michael Grady	Dan Gullion, Rodney Wade
May 2, 2026 · Doubles 2W6-4, 6-2
RAFAEL RC v TIBURON PEN C Adult 18 & Over Mens 4.0	Tommy Hellyer	Troy Pewitt, Matthew Ockner
April 25, 2026 · Doubles 2L6-2, 6-4
MILL VALLEY v RAFAEL RC Adult 18 & Over Mens 4.0	Jason Bousquet	Roark Vandien, Scott Dalton
April 17, 2026 · Doubles 1 · PlayoffsW6-1, 6-3
RAFAEL RC 40AM4.0A 2 v MARIN TC 40AM4.0A [Mad Dawgs] 2 Adult 40 & Over Mens 4.0 1	Michael Grady	Michael Lustenberger, Jason Holmes
April 12, 2026 · Doubles 1 · PlayoffsW6-3, 6-0
RAFAEL RC 40AM4.0A 2 v BOYLE PK 40AM4.0A 2 Adult 40 & Over Mens 4.0 2	Michael Grady	Charlie Norman, Robert Williard
April 4, 2026 · Doubles 3 · PlayoffsW6-1, 6-0
RAFAEL RC 40AM4.0A 2 v MARIN TC 40AM4.0B 2 Adult 40 & Over Mens 4.0 2	Tommy Hellyer	Igor Scherba, Charles Spelman
February 28, 2026 · Doubles 1L6-4, 6-3
BELVEDERE TC v RAFAEL RC Mixed 18 & Over 8.0	Kate McMillan	Toby Peelle, Keith Lister
February 21, 2026 · Doubles 3L6-3, 3-6, 1-0
FLYTE RC v RAFAEL RC/AWHS Adult 40 & Over Mens 4.5	Britt Doyle	Geoffrey Gerding, Jason Lytz
February 21, 2026 · Doubles 1W7-6, 6-1
RAFAEL RC 40AM4.0A 2 v ROLLING HILLS 40AM4.0A 2 Adult 40 & Over Mens 4.0 2	Jeff Marquis	Toby Tyler, Peter Halpern
January 24, 2026 · Doubles 1W6-3, 7-6
NOVATO TC/PIONEER PK v RAFAEL RC Mixed 18 & Over 8.0	Kelly Mcgeehan	Shannon Rajewski, Miguel Pool
January 18, 2026 · Doubles 2L6-2, 6-4
RAFAEL RC/AWHS v FLYTE RC Adult 40 & Over Mens 4.5	Nathaniel Ahearn	Nick Opderbeck, Sacha Drazien
January 17, 2026 · Doubles 1L6-1, 4-6, 1-0
MARIN TC v RAFAEL RC Mixed 18 & Over 8.0	Sharon Klein	Gary Russillo, Susan Swezy
January 10, 2026 · Doubles 1W6-3, 6-4
ROLLING HILLS 40AM4.0A 2 v RAFAEL RC 40AM4.0A 2 Adult 40 & Over Mens 4.0 2	Paul McGeehan	Ethan Daniels, Douglas de Salvo
November 2, 2025 · Doubles 1L6-0, 6-2
RAFAEL RC v GALVIN PK Combo Mens League 8.5	Michael Grady	Michael Saucy, John Taylor
November 2, 2025 · Doubles 2W6-1, 6-2
RAFAEL RC v ROLLING HILLS Combo Mens League 8.5	Jason Bousquet	Ethan Daniels, Daniel Tyreus
October 11, 2025 · Doubles 2L6-2, 6-4
ROHNERT PK TC/MAGNOLIA/M PK v RAFAEL RC Combo Mens League 8.5	Tommy Hellyer	Jamin Ruark, Cory Fulchiron
October 4, 2025 · Doubles 1W6-3, 1-6, 1-0
RAFAEL RC v BELVEDERE TC Combo Mens League 8.5	Sean Raymond	Ben Portnoy, Britt Doyle
September 27, 2025 · Doubles 2 · SectionalsL6-3, 7-5
RAFAEL RC v REFUGIO PK Mixed 40 & Over 9.0	Kelly Sperry	Julia Overs Bates, Arjun Rihan
September 18, 2025 · Doubles 2L6-2, 7-5
MARIN TC v RAFAEL RC Combo Mens League 8.5	Jason Bousquet	James Brenner, Jonathan Parker
August 17, 2025 · Doubles 2W6-3, 6-7, 1-0
RAFAEL RC v SCOTT VALLEY Mixed 40 & Over 8.0	Sharon Klein	Mary Todd, Mark Stuart
August 16, 2025 · Doubles 2L7-6, 6-3
HARBOR PT v RAFAEL RC Mixed 40 & Over 9.0	Alison St Sure	Valeria Pinna, Richard Khoe
July 27, 2025 · Doubles 3W6-2, 6-3
MARIN TC v RAFAEL RC Mixed 40 & Over 8.0	Ashley Hellyer	Brenda Dorian, Pramote Phejtrakul
July 20, 2025 · Doubles 3L6-3, 6-2
RAFAEL RC v MARIN TC Mixed 40 & Over 9.0	Eileen Benson	David Erlich, Kristen Nicita
July 10, 2025 · Doubles 1W6-4, 6-2
MARIN TC v RAFAEL RC Mixed 40 & Over 8.0	Sharon Klein	Derek Boorse, Kiran F Narsinh
July 6, 2025 · Doubles 3L7-6, 6-7, 1-0
RAFAEL RC v HARBOR PT Mixed 40 & Over 9.0	Jennifer Slippy	Jennie Kessinger, Geoffrey Gerding
June 26, 2025 · Doubles 1L1-6, 6-4, 1-0
RAFAEL RC v MT TAM RC Mixed 40 & Over 8.0	Ashley Hellyer	Scott Key, Karen Omholt
June 21, 2025 · Doubles 2W7-5, 6-4
MILL VALLEY v RAFAEL RC Mixed 40 & Over 8.0	Sharon Klein	Bill Graham, Lynn Graham
June 15, 2025 · Doubles 3L6-0, 6-1
MARIN TC v FLYTE RC Adult 18 & Over Mens 4.5	Andrew Werner	Michael Mascott, Jack Harrington
May 30, 2025 · Doubles 1L6-2, 6-1
MARIN TC v MILL VALLEY Adult 18 & Over Mens 4.5	Kushal Chakrabarty	Jacques Soenens, Larry Smith
May 24, 2025 · Doubles 1L7-6, 7-5
TIBURON PEN C v MARIN TC Adult 18 & Over Mens 4.5	Michael Myette	Dana Long, Henry Homes
May 7, 2025 · Doubles 3L6-2, 2-6, 1-0
MARIN TC v MILL VALLEY Adult 18 & Over Mens 4.5	Michael Lustenberger	James Milligan, Eric Issadore
May 3, 2025 · Doubles 1L6-2, 4-6, 1-0
MARIN TC v TIBURON PEN C Adult 18 & Over Mens 4.5	Chris Trepte	Jonathan Golden, Andre Mancl
March 29, 2025 · Doubles 3 · PlayoffsL7-6, 4-6, 1-0
RAFAEL RC v MARIN TC Mixed 18 & Over 9.0	Emily Parento	Jennifer Rogers, Michael Lustenberger
March 6, 2025 · Doubles 1W7-6, 2-6, 1-0
MT TAM RC v RAFAEL RC Mixed 18 & Over 9.0	Alison St Sure	Robin Gluck, Jason Tavano
March 3, 2025 · Doubles 2L6-4, 6-2
MARIN TC v RAFAEL RC Mixed 18 & Over 9.0	Angela Downs	Kushal Chakrabarty, Kiran F Narsinh
March 2, 2025 · Doubles 3W6-1, 6-1
RAFAEL RC v TIBURON PEN C Mixed 18 & Over 8.0	Kendal Burrell	Christopher Povio, Lauren Povio
March 1, 2025 · Doubles 2L6-1, 6-2
MILL VALLEY v FLYTE RC Adult 40 & Over Mens 4.5	Jason Holmes	Michael Ellis, Robert Blechman
February 23, 2025 · Doubles 2W6-4, 7-6
RAFAEL RC v MT TAM RC Mixed 18 & Over 9.0	Elizabeth Notti	Michelle Gurman, Wallace Tice
February 17, 2025 · Doubles 2L6-1, 6-2
MARIN TC v FLYTE RC Adult 40 & Over Mens 4.5	Jason Holmes	James Brandt, Michael Damiani
February 16, 2025 · Doubles 1W7-5, 2-6, 1-0
RAFAEL RC v MARIN TC Mixed 18 & Over 8.0	Ashley Hellyer	Jason Holmes, Jamie Papadimos
February 15, 2025 · Doubles 2W6-4, 4-6, 1-0
RAFAEL RC v MARIN TC Mixed 18 & Over 9.0	Elizabeth Notti	Brooke Juhl, Jason Holmes
January 12, 2025 · Doubles 3L6-4, 6-2
RAFAEL RC v MARIN TC Mixed 18 & Over 9.0	Erin Chamberlin	Jennifer Rogers, Michael Graziano
November 3, 2024 · Doubles 3L6-3, 7-5
MARINWOOD COMM CTR v RAFAEL RC Combo Mens League 8.5	Josh Quaas	Thomas Schmidt, Joe Gulash
October 20, 2024 · Doubles 3L6-7, 6-4, 1-0
MILL VALLEY v RAFAEL RC Combo Mens League 8.5	Bob Fields	Mark Shaw, Larry Smith
October 13, 2024 · Doubles 2L6-1, 6-0
ROLLING HILLS v RAFAEL RC Combo Mens League 8.5	Paul McGeehan	Tom Kincaid, Sachin Monga
September 29, 2024 · Doubles 2L6-2, 6-2
LAGUNITAS CC v RAFAEL RC Combo Mens League 8.5	Josh Quaas	Jimmy Hyman, Robert Cahill
September 22, 2024 · Doubles 2W6-4, 6-3
RAFAEL RC v ROHNERT PK TC/MAGNOLIA/M PK Combo Mens League 8.5	Tommy Hellyer	Cory Fulchiron, Luis Nanez
September 15, 2024 · Doubles 2W7-5, 1-6, 1-0
RAFAEL RC v MARINWOOD COMM CTR Combo Mens League 8.5	Tommy Hellyer	Joe Gulash, Chris Neal
September 4, 2024 · Doubles 3L6-1, 6-4
MARIN TC v RAFAEL RC Combo Mens League 8.5	Tony Gambardella	Scott Harrison, Kushal Chakrabarty
August 15, 2024 · Doubles 2L6-3, 6-4
SCOTT VALLEY v RAFAEL RC Mixed 40 & Over 8.0	Kendal Burrell	Laura Spence, Joe Gulash
August 12, 2024 · Doubles 1L6-3, 7-5
RAFAEL RC v BELVEDERE TC Mixed 40 & Over 8.0	Amy Atherton	Ben Portnoy, Michelle Endres
July 28, 2024 · Doubles 1L6-7, 6-3, 1-0
ROLLING HILLS v RAFAEL RC Mixed 40 & Over 8.0	Amy Atherton	Jonathan Thompson, Catherine Diego
March 24, 2024 · Doubles 2W6-0, 6-4
RAFAEL RC v MARIN TC Mixed 18 & Over 8.0	Amy Atherton	Karen Loebbaka, Steve Juliani
February 11, 2024 · Doubles 2L6-2, 6-2
RAFAEL RC v HARBOR PT Mixed 18 & Over 8.0	Kendal Burrell	Bec Heinrich, Ben Hock
February 9, 2024 · Doubles 2W7-6, 1-6, 1-0
ROLLING HILLS v RAFAEL RC Mixed 18 & Over 8.0	Sharon Klein	Martina Hamamjian, Jonathan Thompson
July 23, 2023 · Doubles 3L6-4, 6-2
RAFAEL RC v MARIN TC Mixed 40 & Over 9.0	Erin Chamberlin	Scott Harrison, Chiaki Harrison
July 9, 2023 · Doubles 1L6-3, 6-1
RAFAEL RC v HARBOR PT Mixed 40 & Over 9.0	Erin Chamberlin	Christine Costamagna, Robert Blechman
October 23, 2022 · Doubles 3W6-0, 6-3
ROLLING HILLS v MARIN TC Combo Mens League 8.5	Jason Holmes	Elden K Lew, Eric White
October 8, 2022 · Doubles 2W6-4, 5-7, 1-0
MARIN TC v ROLLING HILLS Combo Mens League 8.5	Igor Scherba	Andrew Hoppe, Kenneth Hoppe
September 30, 2022 · Doubles 3W7-6, 6-3
MARIN TC v HARBOR PT Combo Mens League 8.5	Mike Schulist	Peter Levi, Fried Joshua
September 8, 2022 · Doubles 2W6-4, 6-3
ROLLING HILLS v MARIN TC Combo Mens League 8.5	Michael Lustenberger	Dallas DeKeyrel, Eric Zahra
April 16, 2022 · Doubles 2 · SectionalsL6-2, 6-2
RAFAEL RC v WALLENBERG PK Mixed 18 & Over 9.0	Alison St Sure	Kevin Margo, Katie Mcdonough
April 15, 2022 · Doubles 3 · SectionalsL6-0, 3-6, 1-0
ROUND HILL CC v RAFAEL RC Mixed 18 & Over 9.0	Anna Varnay-Truong	James Greig, Alison L Vidal
April 15, 2022 · Doubles 1 · SectionalsL6-2, 6-0
RAFAEL RC v MERVYN MORRIS PK Mixed 18 & Over 9.0	Jennifer Slippy	Lisa Liang, Bryan Nguyen
March 11, 2022 · Doubles 3L6-3, 6-7, 1-0
BELVEDERE TC v RAFAEL RC Mixed 18 & Over 8.0	Michelle Nardone	Alexandra Chamberlain, Carter Agar
March 6, 2022 · Doubles 3W6-1, 7-5
BAY CLUB ROSS VALLEY v RAFAEL RC Mixed 18 & Over 8.0	Kelly Mcgeehan	Corey Stodolnic, Caben Chester
March 5, 2022 · Doubles 2L7-6, 6-4
MARIN TC v RAFAEL RC Mixed 18 & Over 9.0	Angela Downs	Emily Birkenseer, John Backof
February 19, 2022 · Doubles 2L6-3, 3-6, 1-0
MARIN TC v MAGNOLIA/M PK Adult 40 & Over Mens 4.5	Scott Harrison	Kevin Dahlstedt, Michael Volkin
February 13, 2022 · Doubles 3L6-2, 6-4
RAFAEL RC v MARIN TC Mixed 18 & Over 9.0	Jennifer Slippy	Kimberly Borah-Schulist, Robert Ahearn
February 6, 2022 · Doubles 3L4-6, 7-6, 1-0
MARIN TC v RAFAEL RC Mixed 18 & Over 9.0	Alison St Sure	Kimberly Borah-Schulist, John Backof
January 23, 2022 · Doubles 1L6-1, 6-3
MARIN TC v RAFAEL RC Mixed 18 & Over 8.0	Michelle Nardone	Grace Backof, John Backof
January 15, 2022 · Doubles 2W6-4, 4-6, 1-0
MAGNOLIA/M PK v MARIN TC Adult 40 & Over Mens 4.5	Scott Harrison	Timothy Barlow, Angelo Purugganan