Teams

Racquet Masters

2025 Adult 55 and Over League · 7.0 Men

15 players · average NTRP 3.50 / OAHU

View scouting list →
Schedule11 played
2025-05-25vs Bruceki’sLost 02
L#1 DoublesDean Kozai / William Graffigna vs Daniel Schmidt / Shane Sumida0-6, 3-6
L#2 DoublesConrad Murashige / Steven Balbirona vs Curtis Nakamura / Jordan Joanou4-6, 1-6
2025-05-18vs Match Point 55+Won 30
W#1 DoublesDevon Merrifield / Wayne Goo vs Jerry Wheeler / Charles Leake6-2, 6-4
W#2 DoublesRyan Yamasaki / Frederick Shaw vs Gil Bueno / Mark Leonard6-4, 6-4
W#3 DoublesLeighton Lum / Robert Nogami vs Jeffrey Wong / Ivan Awa6-1, 7-5
2025-05-12vs LatecomersWon 10
W#2 DoublesRobert Nogami / Leighton Lum vs Darrell Zane / Andrew Chun6-2, 6-3
2025-05-04vs OC Older DolphinsWon 21
L#1 DoublesMike Shima / Steven Balbirona vs Victor Poppinga / David Kula2-6, 3-6
W#2 DoublesScott Lawton / Byron Nagasako vs Julio Polo / James Kurzeka6-1, 6-3
W#3 DoublesRyan Yamasaki / Dean Kozai vs Jamie Jeffryes / Vatche Martirosian6-3, 6-4
2025-04-27vs Kakaako Bay RacKet ClubLost 03
L#1 DoublesMike Shima / Dean Kozai vs Andre Moux / Howard Wong4-6, 1-6
L#2 DoublesByron Nagasako / Wayne Goo vs Jackson Wang / Scott Takiguchi6-3, 3-6, 0-1
L#3 DoublesRyan Yamasaki / Frederick Shaw vs Daryl Ching / Andres Libed2-6, 3-6
2025-04-13vs Mas Swerty BarkadasLost 03
L#1 DoublesDominic Dumlao / Scott Lawton vs Wilfredo Banawa / Jonie Lising3-6, 4-6
L#2 DoublesByron Nagasako / Frederick Shaw vs DKF Young / Edwin Barroga4-6, 1-6
L#3 DoublesRobert Nogami / Leighton Lum vs Cy Yamamoto / Gerald Lau3-6, 4-6
2025-04-06vs Doug's DudesWon 20
W#1 DoublesDominic Dumlao / Scott Lawton vs Frank Allen / Lloyd Yonemura6-2, 7-5
W#2 DoublesWayne Goo / Byron Nagasako vs Mark Komatsu / Ruben Oania6-4, 7-5
2025-03-30vs Tennis The MenaceWon 30
W#1 DoublesRyan Yamasaki / Dean Kozai vs Jeffrey Ung / Darren Chang6-2, 6-4
W#2 DoublesRobert Nogami / Leighton Lum vs Wendell Kong / Thomas Lake6-0, 6-3
W#3 DoublesDevon Merrifield / Wayne Goo vs Darryl Yap / Miles Hirata7-6, 6-4
2025-03-23vs Makule Hawaii 55+ 7.0Won 20
W#2 DoublesByron Nagasako / Frederick Shaw vs Edmund Lum / John Burns6-4, 7-5
W#3 DoublesScott Lawton / Dominic Dumlao vs Jason Yoshimi / John Dejesus6-3, 6-4
2025-03-16vs Court JestersWon 30
W#1 DoublesRyan Yamasaki / Dean Kozai vs Mark Landau / Richard Manz6-4, 3-6, 1-0
W#2 DoublesDominic Dumlao / Scott Lawton vs Richard Leclerc / Ian Greene6-2, 6-1
W#3 DoublesDevon Merrifield / Wayne Goo vs Mike McPherson / Thomas Deir6-2, 7-6
2025-03-09vs Penn Men 7.0 55+Lost 02
L#2 DoublesByron Nagasako / Robert Nogami vs Steven Adachi / Dean Yamamoto4-6, 3-6
L#3 DoublesLeighton Lum / Dean Kozai vs William Churchill / Bill Ota3-6, 3-6
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 standings for 7.0 Men 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 3.16 estimated across 14 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.

3.48
Scott Lawton
usually #2 Doubles 40%, also #1 Doubles 40% · published 3.5
3.36
Wayne Goo
usually #3 Doubles 40%, also #2 Doubles 40% · published 3.5
3.34
Devon Merrifield
usually #3 Doubles 57%, also #1 Doubles 29% · published 3.5
3.31
Frederick Shaw
usually #2 Doubles 75%, also #3 Doubles 25% · published 3.5
Dean Kozai
usually #1 Doubles 67%, also #3 Doubles 33% · published 3.5
3.21
Dominic Dumlao
usually #1 Doubles 100% · published
3.18
Leighton Lum
usually #3 Doubles 60%, also #2 Doubles 40% · published 3.5
3.16
Steven Balbirona
usually #1 Doubles 50%, also #2 Doubles 50% · published 3.5
3.15
Ryan Yamasaki
usually #1 Doubles 40%, also #3 Doubles 40% · published 3.5
3.08
William Graffigna
published
3.08
Mike Shima
published
3.06
Robert Nogami
usually #3 Doubles 100% · published
3.01
Byron Nagasako
usually #2 Doubles 100% · published 3.5
2.99
Conrad Murashige
published 3.5
2.85
Stanley Hamada
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.

Frederick Shaw + Ryan Yamasaki271153% games+6.2% vs expected
Conrad Murashige + Leighton Lum5360% games+4.3% vs expected
Devon Merrifield + Wayne Goo13658% games+1.8% vs expected
Dean Kozai + Ryan Yamasaki10257% games+0.4% vs expected
Byron Nagasako + Robert Nogami3251% games−1.1% vs expected
Leighton Lum + Robert Nogami3543% games−6.5% vs expected
Frederick Shaw + Dean Kozai4165% gamesnot enough data
Byron Nagasako + Wayne Goo4155% gamesnot 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.

3.5
Scott Lawton
43W–37L career · 5 lines in 2025
<1%57%43%
3.48
3.5
Wayne Goo
39W–51L career · 5 lines in 2025
<1%83%16%
3.36
3.5
Devon Merrifield
54W–68L career · 7 lines in 2025
1%86%13%
3.34
3.5
Frederick Shaw
68W–39L career · 4 lines in 2025
1%90%9%
3.31
3.5
Dean Kozai
52W–54L career · 6 lines in 2025
not enough data
Dominic Dumlao
32W–17L career · 1 line in 2025
7%91%2%
3.21
3.5
Leighton Lum
42W–36L career · 5 lines in 2025
10%89%1%
3.18
3.5
Steven Balbirona
27W–25L career · 2 lines in 2025
13%86%1%
3.16
3.5
Ryan Yamasaki
105W–51L career · 5 lines in 2025
14%85%1%
3.15
William Graffigna
42W–45L career · no lines in 2025
27%73%<1%
3.08
Mike Shima
5W–6L career · no lines in 2025
27%72%<1%
3.08
Robert Nogami
19W–32L career · 1 line in 2025
35%65%<1%
3.06
3.5
Byron Nagasako
70W–88L career · 6 lines in 2025
47%53%<1%
3.01
3.5
Conrad Murashige
11W–23L career · no lines in 2025
52%48%<1%
2.99
Stanley Hamada
11W–42L career · no lines in 2025
85%15%<1%
2.85

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.