Teams

MARIN TC 18AM4.0A

2025 ADULT 18&Over · Men's 4.0

13 players · average NTRP 3.83 / 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 →
Schedule8 played
2025-06-15vs BELVEDERE TC 18AM4.0AWon 10
W#3 DoublesDerek Boorse / Gary Lenoff vs Rocky Moss / Christopher Sheldon0-6, 7-5, 1-0
2025-06-14vs BELVEDERE TC 18AM4.0ALost 01
L#1 DoublesDerek Boorse / Gary Lenoff vs Thomas Chung / Julian Monatlik0-6, 1-6
2025-06-08vs MILL VALLEY 18AM4.0ASplit 11
L#1 DoublesMichael Graziano / Ara Hamamjian vs Nickolay Bochilo / Roark Vandien0-6, 2-6
W#2 DoublesGary Lenoff / Derek Boorse vs Stacy Bloom / Nico Safrit7-5, 6-4
2025-06-07vs BAY CLUB ROSS VALLEY 18AM4.0ALost 01
L#2 SinglesDerek Boorse vs Josh Jaffe1-6, 1-6
2025-06-01vs ROLLING HILLS 18AM4.0ALost 01
L#3 DoublesGary Lenoff / Derek Boorse vs Santiago Pelaez / Trevor Scotto4-6, 6-7
2025-05-16vs BAY CLUB ROSS VALLEY 18AM4.0ALost 01
L#3 DoublesJody Osterweil / Derek Boorse vs David Thomas / Satish Pillai3-6, 5-7
2025-05-03vs MILL VALLEY 18AM4.0ALost 02
L#2 SinglesAra Hamamjian vs Ben Crosswell6-4, 3-6, 0-1
L#3 DoublesDerek Boorse / Jody Osterweil vs Tim Emanuels / Bill Graham2-6, 2-6
2025-04-26vs ROLLING HILLS 18AM4.0AWon 10
W#3 DoublesAra Hamamjian / Gary Lenoff vs Eric Zahra / Ian Scott6-3, 3-6, 1-0
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 standings for Men's 4.0 have not been collected yet. Where we have them we show every team in the flight ranked, with this team highlighted. The crawler is still filling in older seasons and flights.

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 3.55 estimated across 10 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.

3.87
3.79
Robert Ahearn
published
3.72
Peter Olsen
published
3.68
Michael Graziano
published
3.53
Chris Cooper
published 3.5
3.50
Ara Hamamjian
usually #1 Doubles 63%, also #3 Doubles 13% · published 4
3.48
Steve Juliani
published
3.35
Jody Osterweil
published
3.34
Derek Boorse
usually #1 Doubles 38%, also #3 Doubles 31% · published 4
3.27
Laurence MacKler
published
Gary Lenoff
published
Gary Russillo
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% gamesnot enough data
Robert Ahearn + Michael Lustenberger044 matchesnot enough data
Derek Boorse + Michael Graziano033 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 · no lines in 2025
<1%81%18%
3.87
Robert Ahearn
4W–6L career · no lines in 2025
2%91%7%
3.79
Peter Olsen
5W–4L career · no lines in 2025
6%92%2%
3.72
Michael Graziano
21W–8L career · no lines in 2025
10%89%1%
3.68
3.5
Chris Cooper
12W–5L career · no lines in 2025
<1%42%58%
3.53
4
Ara Hamamjian
57W–80L career · 8 lines in 2025
51%49%<1%
3.50
Steve Juliani
15W–11L career · no lines in 2025
<1%56%44%
3.48
Jody Osterweil
5W–12L career · no lines in 2025
1%84%15%
3.35
4
Derek Boorse
137W–176L career · 16 lines in 2025
88%12%<1%
3.34
Laurence MacKler
3W–8L career · no lines in 2025
95%5%<1%
3.27
Gary Lenoff
1W–1L career · no lines in 2025
not enough data
Gary Russillo
1W–1L career · no lines in 2025
not enough data
Mike Schulist
2W–2L career · no lines in 2025
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.