Teams

kumasaka

2025 Adult 40 & Over - NAZ · NAZ 4.0 Men

11 players · average NTRP 3.83 / NORTHERN ARIZONA

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 →
Schedule7 played
2024-11-16vs NAZ/Mraz/40&over/4.0MSplit 22
L#1 DoublesKeiji Iwai / David Kumasaka vs Stephen Lakowske / John Curtis5-7, 5-7
W#1 SinglesJohn Malone vs Robert Eastman7-6, 6-2
L#2 DoublesBruce Bourne / Robert Voytek vs Kirk Westervelt / Steven Pierce5-7, 3-6
W#3 DoublesJim Haslett / Timothy Weber vs Josh Walker / Jeff Champ1-6, 7-6, 1-0
2024-11-16vs NAZ/Mraz/40&over/4.0MSplit 22
W#1 DoublesKeiji Iwai / John Malone vs Jeff Champ / Robert Eastman6-4, 4-6, 1-0
W#1 SinglesTimothy Weber vs Josh Walker6-3, 6-4
L#2 DoublesBruce Bourne / David Kumasaka vs Andy Mraz / Matthew Mraz5-7, 2-6
L#3 DoublesJim Haslett / Robert Voytek vs John Curtis / Frank Coe3-6, 3-6
2024-11-02vs KolodyWon 40
W#1 DoublesKeiji Iwai / Robert Voytek vs Diego Constante / Steven Riggs6-4, 6-4
W#1 SinglesJeffrey Hovermill vs Mark Navarro6-3, 6-3
W#2 DoublesJohn Malone / Timothy Weber vs Robert Schuessler / Michael Dedic6-1, 6-3
W#3 DoublesNicholas Voichick / Jared Archer vs Daniel Herrick / John Kolody4-6, 7-6, 1-0
2024-11-02vs KolodyLost 03
L#1 DoublesKeiji Iwai / John Malone vs Michael Dedic / Diego Constante6-7, 4-6
L#2 DoublesNicholas Voichick / Bryan Gest vs Steven Riggs / Daniel Herrick6-3, 2-6, 0-1
L#3 DoublesBruce Bourne / Robert Voytek vs Robert Schuessler / Mark Navarro3-6, 2-6
2024-10-05vs NAZ/Mraz/40&over/4.0MLost 04
L#1 DoublesKeiji Iwai / Bryan Gest vs John Curtis / Kirk Westervelt3-6, 4-6
L#1 SinglesJohn Malone vs Stephen Lakowske3-6, 4-6
L#2 DoublesRobert Voytek / Timothy Weber vs Andy Mraz / Matthew Mraz2-6, 2-6
L#3 DoublesDavid Kumasaka / Jim Haslett vs Sterling Fetty / Luke Thesing2-6, 1-6
2024-10-05vs NAZ/Mraz/40&over/4.0MLost 04
L#1 DoublesJohn Malone / Keiji Iwai vs Matthew Mraz / Andy Mraz3-6, 7-5, 0-1
L#1 SinglesBryan Gest vs Josh Walker5-7, 3-6
L#2 DoublesTimothy Weber / Robert Voytek vs John Curtis / Steven Pierce3-6, 3-6
L#3 DoublesBruce Bourne / Jim Haslett vs Sterling Fetty / Luke Thesing1-6, 1-6
2024-09-22vs KolodyWon 31
W#1 DoublesRobert Voytek / Bryan Gest vs Packy Baker / Jacob Paulk6-0, 6-1
W#1 SinglesKeiji Iwai vs Mark Navarro6-2, 6-2
W#2 DoublesTimothy Weber / Jeffrey Hovermill vs Diego Constante / Craig Abney6-2, 7-6
L#3 DoublesDavid Kumasaka / Nicholas Voichick vs Daniel Herrick / Michael Dedic4-6, 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 standings2 teams · NAZ 4.0 Men
TeamWLInd. WInd. LSets lostGames lost
1NAZ/Mraz/40&over/4.0M8026615222
2kumasaka25121635276

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 3.65 estimated across 8 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.

3.82
Robert Voytek
usually #2 Doubles 43%, also #1 Doubles 29% · published
3.76
Timothy Weber
usually #2 Doubles 67%, also #3 Doubles 17% · published
3.75
John Malone
usually #1 Doubles 50%, also #1 Singles 33% · published
3.68
Bryan Gest
usually #1 Doubles 50%, also #1 Singles 25% · published 4
3.63
Keiji Iwai
usually #1 Doubles 86%, also #1 Singles 14% · published
3.56
Nicholas Voichick
usually #3 Doubles 67%, also #2 Doubles 33% · published
3.56
David Kumasaka
usually #3 Doubles 50%, also #1 Doubles 25% · published 4
3.41
Jim Haslett
usually #3 Doubles 100% · published
Bruce Bourne
usually #2 Doubles 50%, also #3 Doubles 50% · published 3.5
Jared Archer
usually #3 Doubles 100% · published
Jeffrey Hovermill
usually #2 Doubles 50%, also #1 Singles 50% · 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.

Nicholas Voichick + Jared Archer4254% games+5.1% vs expected
Robert Voytek + Bryan Gest3257% games+3.2% vs expected
John Malone + Keiji Iwai131352% games−1.0% vs expected
John Malone + Timothy Weber3451% games−4.1% vs expected
John Malone + Bryan Gest4351% games−4.4% vs expected
Keiji Iwai + David Kumasaka61645% games−5.1% vs expected
Robert Voytek + David Kumasaka2840% games−7.5% vs expected
John Malone + Robert Voytek0630% games−16.3% vs expected
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.

Robert Voytek
21W–59L career · 7 lines in 2025
1%91%8%
3.82
Timothy Weber
33W–38L career · 6 lines in 2025
2%94%3%
3.76
John Malone
75W–64L career · 6 lines in 2025
3%95%3%
3.75
4
Bryan Gest
31W–29L career · 4 lines in 2025
9%91%1%
3.68
Keiji Iwai
52W–71L career · 7 lines in 2025
16%84%<1%
3.63
Nicholas Voichick
12W–25L career · 3 lines in 2025
31%69%<1%
3.56
4
David Kumasaka
27W–57L career · 4 lines in 2025
32%67%<1%
3.56
Jim Haslett
13W–24L career · 4 lines in 2025
<1%75%25%
3.41
3.5
Bruce Bourne
22W–18L career · 4 lines in 2025
not enough data
Jared Archer
9W–17L career · 1 line in 2025
not enough data
Jeffrey Hovermill
12W–4L career · 2 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.