Teams

MARIN TC 18AM4.0A

2026 ADULT 18&Over · Men's 4.0

25 players · average NTRP 3.82 / NO. CALIFORNIA

No matches recorded for this roster in this league — it may be a placeholder registration, or the season may not have started.

View scouting list →
Schedule10 played
2026-06-13vs RAFAEL RC 18AM4.0ALost 04
L#1 DoublesDavid Bell / Ara Hamamjian vs Jason Bousquet / Nick Notti2-6, 2-6
L#1 SinglesKai He vs Michael Grady2-6, 4-6
L#2 DoublesPeter Rogers / Gregg Trueman vs Geoff Hazard / Tommy Hellyer2-6, 1-6
L#2 SinglesWill Lee vs Sean Raymond3-6, 7-5, 1-0
2026-05-31vs PRIORY TC 18AM4.0ALost 14
L#1 DoublesMichael Lustenberger / David Bell vs Tim Rose / Jake Pollak6-1, 5-7, 0-1
L#1 SinglesPhillip Korolog vs Hamid Rafiei1-6, 6-3, 0-1
L#2 DoublesKevin Hakman / Laurence MacKler vs Brett Nowak / Micha Berman6-7, 1-6
W#2 SinglesEthan Dornhelm vs Mark Lasser6-3, 6-2
L#3 DoublesMichael Graziano / Derek Boorse vs Gary Harms / Parker Hobson4-6, 3-6
2026-05-28vs MT TAM RC 18AM4.0ALost 23
L#1 DoublesDavid Sadoff / Michael Graziano vs Scott Key / Scott Greenberg2-6, 7-5, 0-1
W#1 SinglesNick Stiritz vs Jason Camp3-6, 6-1, 1-0
W#2 DoublesMatthew Core / Ara Hamamjian vs Wallace Tice / Norman Slaught6-2, 3-6, 1-0
L#2 SinglesKai He vs Satish Pillai4-6, 3-6
L#3 DoublesSteve Juliani / Jody Osterweil vs Juanito Guzman / Brian Dunne4-6, 7-6, 1-0
2026-05-15vs LAGUNITAS CC 18AM4.0AWon 32
W#1 DoublesMichael Graziano / Jonathan Parker vs Cole van Brunt / Charles Williams6-3, 1-6, 1-0
L#1 SinglesNick Stiritz vs Robert Cahill2-6, 3-6
L#2 DoublesLaurence MacKler / Kevin Hakman vs Patrick Higgins / Tim Reidy3-6, 2-6
W#2 SinglesEthan Dornhelm vs Sam Crawford6-4, 7-6
W#3 DoublesDoke Kim / Peter Rogers vs Dean Holter / Matthew Caldwell6-1, 6-3
2026-05-10vs BELVEDERE TC 18AM4.0ALost 14
W#1 DoublesMichael Lustenberger / David Bell vs Rocky Moss / Thomas Byrne6-1, 6-2
L#1 SinglesKai He vs James Redfern4-6, 6-4, 0-1
L#2 DoublesJustin Gamache / Jonathan Parker vs Farid Gazor / Fan Zhang1-6, 1-6
L#2 SinglesWill Lee vs Ruben Kalra2-6, 7-6, 0-1
L#3 DoublesPeter Rogers / David Shepard vs Ben Portnoy / Bradley Fenner5-7, 4-6
2026-05-01vs SCOTT VALLEY 18AM4.0AWon 32
W#1 DoublesMichael Graziano / David Sadoff vs Bryce Emo / Andy Cohen6-0, 5-7, 1-0
L#1 SinglesNick Stiritz vs Billy Irwin2-6, 5-7
L#2 DoublesDerek Boorse / Chris Cooper vs Jerry Labay / Steve Marshall4-6, 3-6
W#2 SinglesPhillip Korolog vs Gabriel Sandrolini2-6, 7-6, 1-0
W#3 DoublesJustin Gamache / Matthew Core vs Eric Schwartzman / Ryan Schwartzman7-6, 6-2
2026-04-30vs ROLLING HILLS 18AM4.0ALost 14
L#1 DoublesDerek Boorse / Michael Lustenberger vs Ethan Daniels / Gabriel Chan2-6, 1-6
L#1 SinglesEthan Dornhelm vs Eric David1-6, 4-6
W#2 DoublesAra Hamamjian / Michael Graziano vs Douglas de Salvo / Greg Turk6-4, 7-6
L#2 SinglesChris Cooper vs Andrew Irish0-6, 1-6
L#3 DoublesDoke Kim / Gregg Trueman vs Kenneth Hoppe / Henry Shen2-6, 3-6
2026-04-26vs TIBURON PEN C 18AM4.0ALost 05
L#1 DoublesWill Lee / Michael Lustenberger vs Robert Chang / Lewis Kaufman3-6, 6-4, 0-1
L#1 SinglesNick Stiritz vs Parker Jones7-5, 2-6, 0-1
L#2 DoublesMichael Graziano / Derek Boorse vs David Sherry / Brett Mulberg2-6, 5-7
L#2 SinglesPhillip Korolog vs Dan Etchevers7-5, 3-6, 1-0
L#3 DoublesDavid Sadoff / Ethan Dornhelm vs Troy Pewitt / Jeff Barcy3-6, 6-1, 0-1
2026-04-25vs BOYLE PK 18AM4.0ALost 13
L#1 DoublesAra Hamamjian / Peter Rogers vs Vincent Mar / Kunal Desai2-6, 0-6
L#1 SinglesMatthew Core vs Amit Rajparia3-6, 6-7
L#2 DoublesDoke Kim / Steve Juliani vs Lance Catarozoli / Ed Korenman7-5, 2-6, 0-1
W#2 SinglesPhillip Korolog vs Volodymyr Bosiuk2-6, 6-3, 1-0
2026-04-19vs MILL VALLEY 18AM4.0ALost 23
L#1 DoublesWill Lee / Ara Hamamjian vs Mark Harris / Mark Shaw4-6, 3-6
W#1 SinglesKai He vs Nick Bockh7-5, 3-6, 1-0
L#2 DoublesLaurence MacKler / Matthew Core vs Kevin Knowles / Aaron Klink7-6, 2-6, 0-1
W#2 SinglesNick Stiritz vs Mark Chu-Cheong0-6, 6-2, 1-0
L#3 DoublesDavid Shepard / Jody Osterweil vs Israel Rosales / Bill Graham1-6, 2-6
A tie can be incomplete. Tell us if someone is missing.
i
Grouped by tie — one fixture, several lines. A line shows only when a player on it is someone we have indexed, so an early-season tie for a newly-added team can look short. This also means the line count here will not match the header, which counts individual player appearances.
Flight standings125 teams · Men's 4.0
TeamWLInd. WInd. LSets lostGames lost
1BAY CLUB SF TENNIS 18AM4.0A10044618307
2RIO DEL ORO 18AM4.0A10042820278
3WIKIUP R SC 18AM4.0A10042823305
4FOSTER CITY TC/EDGEWATER PK 18AM4.0A10041924325
5BRAMHALL PK 18AM4.0A9141923293
6REFUGIO PK 18AM4.0A9141925328
7BAY TREES PK 18AM4.0B91391127369
8GOLD RIVER RC 18AM4.0A9141929342
9SEASCAPE SC 18AM4.0A91381231353
10WALNUT CREEK RC/Walnut Creek TC 18AM4.0C91351533330
11ED MITCHELL PK 18AM4.0A91371336381
12WILLOW PASS PK 18AM4.0A91341639347
13SUNNYVALE MTC 18AM4.0E91331739367
14RENO TENNIS CENTER 18AM4.0A91351542410
15BAY CLUB SANTA CLARA 18AM4.0B91331742398
16SAN CARLOS TC/ARGUELLO PK 18AM4.0A82361433347
17RICHMOND TA/NICHOLL PK 18AM4.0A82351534357
18MISSION HILLS 18AM4.0A82341635363
19MITCHELL PK 18AM4.0A82341637368
20ROEDING PK TENNIS CL/ROEDING PK 18AM4.0A82361439385
21SUNNYVALE MTC 18AM4.0B82331739362
22PRIORY TC 18AM4.0A82331740388
23SUNNYVALE TC/SUNNYVALE MTC 18AM4.0A82331740384
24GOLDMAN TC 18AM4.0A82331741366
25SUNNYVALE MTC 18AM4.0F82321842429
26MOUNTAIN VIEW TC/RENGSTORFF PK 18AM4.0B82331743363
27SUNNYVALE MTC 18AM4.0C82321844409
28MILL VALLEY 18AM4.0A82321846395
29GOLDMAN TC 18AM4.0C73341635350
30RIDGEMARK G&CC 18AM4.0A73321842370
31PINOLE PK 18AM4.0A73302043328
32FREMONT HILLS CC 18AM4.0A73331743381
33LOS ALTOS TC/LOS ALTOS GCC 18AM4.0A73311944410
34FOSTER CITY TC/EDGEWATER PK 18AM4.0B73292144373
35FREMONT TC 18AM4.0A73341644428
36WALLENBERG PK 18AM4.0A73321845404
37MILLS COLLEGE 18AM4.0A73292146421
38SUNNYVALE MTC 18AM4.0D73311947429
39DOUGHERTY VALLEY HS 18AM4.0B73292149421
40BAY CLUB COURTSIDE 18AM4.0B73311951437
41CLAREMONT R and S 18AM4.0A73272355467
42BELVEDERE TC 18AM4.0A73252560460
43ROLLING HILLS 18AM4.0A64302044372
44RAFAEL RC 18AM4.0A64302045415
45GOLD RIVER RC 18AM4.0B64311945394
46LAGUNITAS CC 18AM4.0A64311948411
47FOLSOM LAKE CC 18AM4.0B64292148440
48GOLDMAN TC 18AM4.0B64292151430
49LOS GATOS SR 18AM4.0A64272352446
50RINCONADA PK 18AM4.0A64282254467
51BAY CLUB PL 18AM4.0A64272354435
52SHELDON PK 18AM4.0A64252555411
53MODESTO F RC 18AM4.0A64252556475
54GOLDEN GATEWY 18AM4.0A64242657467
55ROUND HILL CC 18AM4.0A55311942383
56BACKESTO PK 18AM4.0A55282249413
57GOLDMAN TC 18AM4.0D55272350415
58SAN FRAN ST U 18AM4.0A55262452448
59BAY CLUB COURTSIDE 18AM4.0A55262454436
60GALVIN PK 18AM4.0A55242654413
61BAY CLUB SF TENNIS 18AM4.0C55262456444
62MEADOW STC 18AM4.0A55262457433
63TIBURON PEN C 18AM4.0A55262457446
64BROADSTONE RC 18AM4.0A55262457437
65PLEASANTON 18AM4.0B55242657454
66UNION CITY LEISURE S/VETERANS MEM PK 18AM4.0A55282260466
67CROW CANYON CC 18AM4.0A55222860434
68CHABOT CANYON 18AM4.0A55242661461
69JOHNSON RANCH 18AM4.0A46272350393
70WALNUT CREEK RC/Walnut Creek TC 18AM4.0B46262453398
71COASTSIDE TA/HALF MOON BAY HS 18AM4.0A46252553394
72MODESTO F RC 18AM4.0B46252553430
73BOYLE PK 18AM4.0A46262457451
74FOSTER CITY TC/EDGEWATER PK 18AM4.0C46242657443
75WASHINGTON PK - BURLINGAME 18AM4.0A46232757433
76WASHOE TENNIS CLUB/WASHOE TC 18AM4.0A46242661461
77ALMADEN VAC 18AM4.0A46232762462
78MAHANY PK 18AM4.0A46203066472
79BAY CLUB SF TENNIS 18AM4.0B46193168483
80WASHINGTON PK 18AM4.0A37242659459
81CUPERTINO TC/CUPERTINO SC 18AM4.0B37212961465
82BAY TREES PK 18AM4.0A37232762489
83RINCONADA PK 18AM4.0B37222865488
84PLEASANTON 18AM4.0C37212966502
85MOUNTAIN VIEW TC/RENGSTORFF PK 18AM4.0A37183267483
86MORAGA CC 18AM4.0A37203068495
87RICHMOND TA/NICHOLL PK 18AM4.0B37193168507
88YUBA CITY RC 18AM4.0A37173369472
89GILROY TENNIS CLUB/GILROY TENNIS CTR 18AM4.0A37163469484
90BACKESTO PK 18AM4.0B37203070520
91BUCHSER MS 18AM4.0A37183271497
92MORGAN HILL TC 18AM4.0A37173373503
93PENINSULA GCC 18AM4.0A37183273491
94DAVIS TC/DAVIS HS 18AM4.0B37183273508
95SILVER CREEK 18AM4.0A37183274533
96BAY CLUB SANTA CLARA 18AM4.0A37163474501
97ROHNERT PK TC/MAGNOLIA/M PK 18AM4.0A37173374521
98MT TAM RC 18AM4.0A37163476502
99PENINSULA TC 18AM4.0A37133777512
100SUNNYVALE MTC 18AM4.0G28203063475
101BROOKSIDE 18AM4.0A28193168494
102MERVYN MORRIS PK 18AM4.0A28173371482
103CUPERTINO TC/CUPERTINO SC 18AM4.0A28153571477
104FOUNTAINGROVE-AC 18AM4.0A28173371511
105VALLEY CHURCH 18AM4.0A28173372514
106BAY CLUB REDWOOD SHORES 18AM4.0A28163473530
107GLTF/SAN FRAN ST U 18AM4.0B28153574509
108WALNUT CREEK RC/Walnut Creek TC 18AM4.0A28143675476
109WASHOE TENNIS CLUB/WASHOE TC 18AM4.0B28153575499
110CLOVIS TC/CLOVIS NORTH HS 18AM4.0A28143677524
111BLACKHAWK CC 18AM4.0A28133778534
112RIO DEL ORO 18AM4.0B28133779521
113MARIN TC 18AM4.0A28143680537
114SUTTER LAWN 18AM4.0A28104085545
115BUCHSER MS 18AM4.0B19183268489
116ROSEVILLE LIFE TIME 18AM4.0A19143675518
117CHAMISAL TC 18AM4.0A19143675507
118WALNUT CREEK RC/Walnut Creek TC 18AM4.0E19153576498
119OLYMPIC 18AM4.0A19123882537
120LOS GATOS SR 18AM4.0B19104083532
121GOLDEN GATEWY 18AM4.0B19113984568
122WALNUT CREEK RC/Walnut Creek TC 18AM4.0D1934795580
123SCOTT VALLEY 18AM4.0A010123879525
124FOOTHILL COLL 18AM4.0A01074387558
125PLEASANTON 18AM4.0A01064492579

Ordered by team wins, then losses, then sets lost — the order USTA uses to seed a flight. Individual wins are lines, not ties.

See the full flight, with every team’s record

ScoutingWhere each opponent usually plays

Signed-in extra: whether this captain plays strict strength order or mixes it up, from every doubles line they have put out. Create a free account to see it.

Roster averages 3.61 estimated across 23 rated players. No lineup is published in advance, so the column below is where each player has actually been used — a captain's habits are the best available forecast. Sign in and claim your record to see who you have played.

3.91
Michael Lustenberger
usually #1 Doubles 67%, also #2 Doubles 33% · published
3.90
Matthew Littrell
published
3.83
Ethan Dornhelm
usually #2 Singles 50%, also #1 Singles 25% · published 4
3.78
Robert Ahearn
published
3.77
Gregg Trueman
usually #3 Doubles 50%, also #2 Doubles 50% · published 4
Gary Lenoff
published 4
3.75
Phillip Korolog
usually #2 Singles 75%, also #1 Singles 25% · published
3.74
Nick Stiritz
usually #2 Singles 56%, also #1 Singles 44% · published 4
3.72
Kevin Hakman
usually #2 Doubles 100% · published
3.71
Michael Graziano
usually #1 Doubles 50%, also #2 Doubles 33% · published
3.68
Kai He
usually #1 Singles 75%, also #2 Singles 25% · published
3.67
Jason Holmes
usually #3 Doubles 43%, also #2 Doubles 43% · published
3.67
Will Lee
usually #2 Singles 67%, also #1 Doubles 22% · published
3.67
David Sadoff
usually #1 Doubles 67%, also #3 Doubles 33% · published 4
3.57
Justin Gamache
usually #2 Doubles 50%, also #3 Doubles 50% · published
3.53
Matthew Core
usually #2 Doubles 55%, also #1 Doubles 27% · published 3.5
3.52
Chris Cooper
usually #1 Doubles 50%, also #2 Doubles 25% · published 3.5
3.49
Ara Hamamjian
usually #1 Doubles 46%, also #3 Doubles 27% · published 4
3.44
Steve Juliani
usually #2 Doubles 50%, also #3 Doubles 50% · published
3.35
Doke Kim
usually #3 Doubles 67%, also #2 Doubles 33% · published 3.5
3.35
Derek Boorse
usually #2 Doubles 50%, also #1 Doubles 25% · published 4
3.34
Jody Osterweil
usually #1 Doubles 43%, also #2 Doubles 29% · published
3.31
David Shepard
usually #3 Doubles 75%, also #1 Doubles 25% · published 3.5
3.30
Laurence MacKler
usually #2 Doubles 100% · published
Mike Schulist
published
Established pairs

Doubles pairs from this roster with three or more matches together anywhere — ordered by performance against what the rating gap predicted, not by record.

Derek Boorse + Ara Hamamjian5456% games+2.0% vs expected
Robert Ahearn + Michael Lustenberger044 matchesnot enough data
Mike Schulist + David Sadoff213 matchesnot enough data
Derek Boorse + Michael Graziano033 matchesnot enough data
Chris Cooper + Matthew Core213 matchesnot enough data
Roster

Ordered by our estimated dynamic rating, which is why two players at the same published level are not tied — a published 4.0 says nothing about where inside the band someone sits. Lines played in this team’s season are shown beside each name.

Michael Lustenberger
18W–20L career · 6 lines in 2026
<1%75%25%
3.91
Matthew Littrell
9W–9L career · no lines in 2026
<1%77%23%
3.90
4
Ethan Dornhelm
3W–4L career · 4 lines in 2026
1%90%9%
3.83
Robert Ahearn
4W–6L career · no lines in 2026
2%94%4%
3.78
4
Gregg Trueman
7W–9L career · 2 lines in 2026
2%94%4%
3.77
4
Gary Lenoff
1W–1L career · no lines in 2026
not enough data
Phillip Korolog
5W–4L career · 4 lines in 2026
3%95%3%
3.75
4
Nick Stiritz
30W–23L career · type A · 9 lines in 2026
3%94%2%
3.74
Kevin Hakman
2W–4L career · 2 lines in 2026
5%94%1%
3.72
Michael Graziano
21W–8L career · 6 lines in 2026
5%94%1%
3.71
Kai He
3W–5L career · 4 lines in 2026
9%91%1%
3.68
Jason Holmes
17W–9L career · 7 lines in 2026
9%90%1%
3.67
Will Lee
0W–9L career · 9 lines in 2026
10%90%1%
3.67
4
David Sadoff
10W–10L career · 3 lines in 2026
10%89%1%
3.67
Justin Gamache
2W–7L career · 2 lines in 2026
29%71%<1%
3.57
3.5
Matthew Core
122W–79L career · 11 lines in 2026
<1%40%60%
3.53
3.5
Chris Cooper
12W–5L career · 8 lines in 2026
<1%44%56%
3.52
4
Ara Hamamjian
57W–80L career · 11 lines in 2026
53%47%<1%
3.49
Steve Juliani
15W–11L career · 4 lines in 2026
<1%67%33%
3.44
3.5
Doke Kim
2W–4L career · 3 lines in 2026
<1%87%13%
3.35
4
Derek Boorse
137W–176L career · 4 lines in 2026
88%12%<1%
3.35
Jody Osterweil
5W–12L career · 7 lines in 2026
<1%89%11%
3.34
3.5
David Shepard
9W–11L career · 4 lines in 2026
1%92%8%
3.31
Laurence MacKler
3W–8L career · 3 lines in 2026
94%6%<1%
3.30
Mike Schulist
2W–2L career · no lines in 2026
not enough data

Three percentages are where each player stands right now: the chance they are below their band, inside it, or above it, on the way they are playing this season. The number on the right is our estimated dynamic rating, which USTA never publishes. This is today rather than a forecast of December, because a forecast has to assume future matches and cannot know whether someone will even be offered them. Percentages are blank where a player has too few matches this season, or at a level where the model does not yet beat a base-rate guess; the estimate is a weaker claim than a probability and survives where those do not.

Not affiliated with or endorsed by the USTA. Ratings labelled as published are USTA year-end figures; anything we describe as an estimate is ours, not USTA’s. Match data is from USTA TennisLink.