The Tennis Desk

TIBURON PEN C 55AM9.0A

Adult 55 & Over Mens 9.0 · Marin · 2026 · TIBURON PENINSULA CLUB

Record and standing

Record: regular season 8-0 over 8 team matches; playoffs 1-0; sectionals 1-2.

TIBURON PEN C 55AM9.0A stands 1st of 3 so far, 8-0 in league play. This is not official standings or an official sectionals qualification calculation. Playoff and sectionals matches are not counted in it. League table

Roster

Polo Cowan5.0s4.87 2-0W W2
David Hultman4.5A4.67 5-0W W W W W5
Jeff Urban4.5C4.67 8-3L L W W W11
Michel Seifer4.5C4.62 6-1L W W W W7
Kevin Erickson4.5C4.57 6-2L W L W W8
Christopher Colwell4.5C4.52 2-2W L W* L W5
Jon Auerbach4.5C4.32 2-2L W* W W L5
Marc Sondheimer4.5s4.32 5-2W L W W W7
Kevin Keenley4.5C4.30 3-0W W W3
Eddy Marcum4.5C4.29 1-1L W* W3
Clayton Flanagan4.5C4.28 2-3L L W L W5
Jeffrey Webb4.0C3.90 3-0W* W W W4
Jeffrey Fisher4.5C— 5-2—7

Levels are Desk levels as of the data run: The Tennis Desk's estimates, on the NTRP scale to two decimals. They are not NTRP ratings. The small chart beside a level is that player's rated lines in 2026. NTRP rating, record and lines are the roster's own published figures for this team. Form is the player's last 5 lines for this team, most recent first. A * after a letter marks a line the other side could not field. Nobody played it, and it counts in no record. Click a heading to sort. One name on this roster matches more than one person in our data, so no level, trend or form is shown for that player.

Team matches

July 12, 2026 L home v GOLD RIVER RC 55AM9.0A, 0-3 Sectionals

LineScoreTIBURON PEN C 55AM9.0AGOLD RIVER RC 55AM9.0A
Doubles 1L 6-1, 6-3Kevin Erickson / Jeff UrbanDave Hagiwara / Mark Obrochta
Doubles 2L 6-3, 6-1Jon Auerbach / Michel SeiferShawn Hayes / Kendall Homer
Doubles 3L 5-7, 3-2Jeffrey Fisher / Clayton FlanaganMichael Kiskinen / Venu Mullapudi

July 11, 2026 W away v LOS GATOS SR 55AM9.0A, 2-1 Sectionals

LineScoreTIBURON PEN C 55AM9.0ALOS GATOS SR 55AM9.0A
Doubles 1W 7-6, 6-2Christopher Colwell / Jeffrey FisherMike Ryan / Thomas Krulevitch
Doubles 2L 7-6, 2-2Jeff Urban / Eddy MarcumBruno Vitali / Stephen Noel
Doubles 3W 7-5, 6-3Kevin Erickson / Marc SondheimerAnand Vasudev / David Darmitzel

July 11, 2026 L away v Corey Reich Tennis Center 55AM9.0A, 1-2 Sectionals

LineScoreTIBURON PEN C 55AM9.0ACorey Reich Tennis Center 55AM9.0A
Doubles 1W 7-5, 6-4Michel Seifer / Jeff UrbanCurtis Dunn / Paul Gee
Doubles 2L 6-4, 6-4Kevin Erickson / Marc SondheimerJeff MacHle / David Richmond
Doubles 3L 7-5, 6-3Christopher Colwell / Clayton FlanaganDavid Chang / Craig Lazarchik

June 14, 2026 W home v MARIN TC 55AM9.0A, 3-0 Playoffs

LineScoreTIBURON PEN C 55AM9.0AMARIN TC 55AM9.0A
Doubles 1W 6-2, 6-4David Hultman / Jeff UrbanChristopher Brawer / Michael Lustenberger
Doubles 2W 6-2, 4-6, 1-0Kevin Erickson / Marc SondheimerRobert Ahearn / Mike Downs
Doubles 3W* 6-0, 6-0Jon Auerbach / Jeffrey Webb—

May 17, 2026 W home v ROHNERT PK TC/MAGNOLIA/M PK 55AM9.0A, 3-0

LineScoreTIBURON PEN C 55AM9.0AROHNERT PK TC/MAGNOLIA/M PK 55AM9.0A
Doubles 1W 6-1, 6-3Jeffrey Fisher / David HultmanJason Duenas / Howard Schnirman
Doubles 2W 2-2Marc Sondheimer / Clayton FlanaganGerald Mehciz / Antonio Vigil
Doubles 3W* 6-0, 6-0Eddy Marcum / Christopher Colwell—

May 10, 2026 W home v MARIN TC 55AM9.0A, 2-1

LineScoreTIBURON PEN C 55AM9.0AMARIN TC 55AM9.0A
Doubles 1L 4-6, 2-2Christopher Colwell / Clayton FlanaganWilliam Breck / William Dagley
Doubles 2W 6-3, 6-2Kevin Erickson / Michel SeiferYong Kim / Andrew Sohn
Doubles 3W 6-3, 6-2David Hultman / Jeff UrbanRobert Ahearn / Michael Viani

May 1, 2026 W home v MARIN TC 55AM9.0A, 3-0

LineScoreTIBURON PEN C 55AM9.0AMARIN TC 55AM9.0A
Doubles 1W 6-4, 6-4David Hultman / Jeff UrbanMike Downs / Andrew Loft
Doubles 2W 6-0, 7-6Polo Cowan / Jeffrey WebbWilliam Breck / Andrew Sohn
Doubles 3W 5-7, 6-0, 1-0Clayton Flanagan / Kevin KeenleyYong Kim / Jonathan Lefferts

April 18, 2026 W away v ROHNERT PK TC/MAGNOLIA/M PK 55AM9.0A, 3-0

LineScoreTIBURON PEN C 55AM9.0AROHNERT PK TC/MAGNOLIA/M PK 55AM9.0A
Doubles 1W 6-0, 6-1Kevin Erickson / Marc SondheimerAntonio Vigil / Howard Schnirman
Doubles 2W 6-4, 6-4Jeff Urban / Kevin KeenleyPeter Magrini / Ken Westly
Doubles 3W 6-1, 6-3Jon Auerbach / Jeffrey FisherJason Duenas / Gerald Mehciz

April 13, 2026 W away v MARIN TC 55AM9.0A, 2-1

LineScoreTIBURON PEN C 55AM9.0AMARIN TC 55AM9.0A
Doubles 1W 6-3, 4-6, 1-0Jeffrey Fisher / Michel SeiferChristopher Brawer / William Dagley
Doubles 2L 6-1, 1-6, 1-0Marc Sondheimer / Jeff UrbanMike Downs / Andrew Loft
Doubles 3W 6-4, 6-1Polo Cowan / Jeffrey WebbJames Brandt / Andrew Sohn

March 29, 2026 W home v ROHNERT PK TC/MAGNOLIA/M PK 55AM9.0A, 3-0

LineScoreTIBURON PEN C 55AM9.0AROHNERT PK TC/MAGNOLIA/M PK 55AM9.0A
Doubles 1W 6-0, 6-1Kevin Erickson / Jeff UrbanGerald Mehciz / Jason Duenas
Doubles 2W 6-2, 1-6, 1-0Marc Sondheimer / Jeffrey WebbSteven Colletto / Antonio Vigil
Doubles 3W 6-0, 6-2Jon Auerbach / Michel SeiferHoward Schnirman / Ken Westly

March 21, 2026 W away v ROHNERT PK TC/MAGNOLIA/M PK 55AM9.0A, 2-1

LineScoreTIBURON PEN C 55AM9.0AROHNERT PK TC/MAGNOLIA/M PK 55AM9.0A
Doubles 1W 6-4, 6-1David Hultman / Eddy MarcumRich Aguirre / Jason Duenas
Doubles 2W 6-1, 6-1Michel Seifer / Jeff UrbanSteven Colletto / Howard Schnirman
Doubles 3L 6-3, 7-6Jon Auerbach / Jeffrey FisherPeter Magrini / Ken Westly

March 19, 2026 W away v MARIN TC 55AM9.0A, 3-0

LineScoreTIBURON PEN C 55AM9.0AMARIN TC 55AM9.0A
Doubles 1W 6-2, 6-3Michel Seifer / Jeff UrbanJames Brandt / T Eric Lehto
Doubles 2W 6-0, 6-2Christopher Colwell / Kevin EricksonMichael Lustenberger / Michael Viani
Doubles 3W 6-4, 7-5Jeffrey Fisher / Kevin KeenleyChristopher Brawer / Andrew Loft

A * after W or L marks a line one side could not field. Nobody played it, and it is left out of every record the Desk computes.

Next matches

No later match is on the schedule.

Other TIBURON PENINSULA CLUB teams in 2026