Teams

The Players Club

2026 WINTER A18&O WEEKEND · 2026 Winter A18&O 4.5 MEN

16 players · average NTRP 4.40 / OHIO VALLEY

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
2026-05-17vs New AlbanyWon 20
W#1 DoublesJamie Marksberry / Mark Waterstreet vs Carl Quinion / Jeffrey Wilcoxon6-2, 6-4
W#2 SinglesJames Hackett vs Evan Mitelman2-1
2026-05-10vs NewGenLost 05
L#1 DoublesMichael Herzog / Jamie Marksberry vs Brady Pema / Michael Stefan6-7, 4-6
L#1 SinglesAyush Kedia vs Tito Bonadonna1-6, 2-6
L#2 DoublesAaron Koch / Mark Waterstreet vs Jack Schadek / Gabe Fogle3-6, 2-6
L#2 SinglesAlexander MacHtay vs Leonardo Trimarchi3-6, 0-6
L#3 DoublesPatrick McColgan / Byron Williams vs Matthew Warburton / Jamie Price2-6, 2-6
2026-04-26vs ElysiumWon 32
W#1 DoublesGriffin Celleghin / Jamie Marksberry vs Raphael Thurber / Tetsuro Togawa6-3, 6-4
W#1 SinglesDouglas Schoenly vs Adam Ewing6-4, 6-7, 1-0
L#2 DoublesAaron Koch / Mark Waterstreet vs David Motta / Joshua Smyth3-6, 6-4, 1-0
W#2 SinglesNick Kowalczyk vs Khuong Pham6-2, 6-4
L#3 DoublesAyush Kedia / James Hackett vs EDWARD YU / Bob Gawronski4-6, 6-4, 0-1
2026-04-19vs New AlbanySplit 22
W#1 DoublesJohn Jonesco / Mark Waterstreet vs Joshua Hafer / Carl Quinion6-1, 6-3
L#1 SinglesJoey Frank vs Eric Chabot2-6, 1-6
W#2 DoublesNick Kowalczyk / Vinh Thai vs Patrick French / Milan Jovanovic3-6, 7-5, 1-0
L#3 DoublesJames Hackett / Alexander MacHtay vs Brian Hall / Jeffrey Wilcoxon4-6, 4-6
2026-04-12vs OlympicWon 31
W#1 DoublesMark Waterstreet / Jamie Marksberry vs Jack Huguenin / Alex Yadegari6-3, 6-3
W#1 SinglesNick Kowalczyk vs Adam Seeley6-2, 6-1
W#2 DoublesAaron Koch / James Hackett vs Frank Isabelle / Konstantin Tsibouris6-0, 6-0
L#3 DoublesBryan Little / Byron Williams vs Roger Speck / Michael White5-7, 1-6
2026-03-29vs OlympicLost 23
L#1 DoublesMichael Herzog / Jamie Marksberry vs Roger Speck / Michael White6-4, 5-7, 0-1
L#1 SinglesAlexander MacHtay vs Jeremy Dominik2-6, 3-6
L#2 DoublesJohn Jonesco / Mark Waterstreet vs Konstantin Tsibouris / Alex Yadegari3-6, 4-6
W#2 SinglesJames Hackett vs Dwayne Rash6-3, 6-3
W#3 DoublesMatthew Esber / Ayush Kedia vs Frank Isabelle / Nick Nieset6-2, 6-0
2026-03-22vs Racquet Club/ScarboroughWon 32
W#1 DoublesGriffin Celleghin / Jamie Marksberry vs Avery Clouse / Jack Baesman6-2, 6-2
L#1 SinglesNick Kowalczyk vs Casey Cempre2-6, 4-6
W#2 DoublesJohn Jonesco / Mark Waterstreet vs Dane Poppe / James MacKey6-2, 6-2
L#2 SinglesAlexander MacHtay vs Brett Hoch1-6, 7-5, 0-1
W#3 DoublesJoey Frank / James Hackett vs Jeffrey Cempre / Jason Roush6-2, 6-3
2026-03-08vs NewGenWon 32
L#1 DoublesMichael Herzog / Jamie Marksberry vs Brady Pema / Michael Stefan1-6, 1-6
W#1 SinglesNick Kowalczyk vs Juan Vera2-6, 6-3, 1-0
L#2 DoublesJohn Jonesco / Mark Waterstreet vs Jamie Price / Leonardo Trimarchi3-6, 4-6
W#2 SinglesGriffin Celleghin vs Matthew Warburton6-3, 6-3
W#3 DoublesAaron Koch / James Hackett vs Adam Schrock / Paul Mazak6-4, 7-5
2026-02-15vs Racquet Club/ScarboroughWon 32
W#1 DoublesGriffin Celleghin / Michael Herzog vs Rob Ashmead / Michael Johansen6-4, 6-4
L#1 SinglesNick Kowalczyk vs Casey Cempre3-6, 3-6
W#2 DoublesJamie Marksberry / Patrick McColgan vs Jon Khoury / Dale Wynkoop6-4, 1-6, 1-0
L#2 SinglesAyush Kedia vs Brett Hoch0-6, 1-6
W#3 DoublesJames Hackett / Aaron Koch vs Jeffrey Cempre / James MacKey6-3, 6-3
2026-01-18vs ElysiumSplit 22
L#1 DoublesMichael Herzog / Nick Kowalczyk vs Tetsuro Togawa / Milan Pereira6-4, 5-7, 0-1
W#2 DoublesJamie Marksberry / Patrick McColgan vs Adam Ewing / Christopher Hupp6-2, 6-3
L#2 SinglesAlexander MacHtay vs Isaac Ahlborn1-6, 2-6
W#3 DoublesMark Waterstreet / John Jonesco vs David Motta / Khuong Pham5-7, 7-5, 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 2026 Winter A18&O 4.5 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 4.18 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.

4.53
Douglas Schoenly
usually #1 Singles 100% · published
4.50
Griffin Celleghin
usually #1 Doubles 75%, also #2 Singles 25% · published
4.39
Nick Kowalczyk
usually #1 Singles 57%, also #1 Doubles 14% · published
4.33
Matthew Esber
usually #3 Doubles 100% · published
4.26
Joey Frank
usually #3 Doubles 50%, also #1 Singles 50% · published
4.26
Jamie Marksberry
usually #1 Doubles 78%, also #2 Doubles 22% · published
Aaron Koch
published 4.5
4.24
Mark Waterstreet
usually #2 Doubles 56%, also #1 Doubles 33% · published
4.17
Vinh Thai
usually #2 Doubles 100% · published
4.15
Patrick McColgan
usually #2 Doubles 67%, also #3 Doubles 33% · published
4.10
James Hackett
usually #3 Doubles 63%, also #2 Singles 25% · published
4.02
Alexander MacHtay
usually #2 Singles 60%, also #1 Singles 20% · published 4.5
3.95
Ayush Kedia
usually #3 Doubles 50%, also #2 Singles 25% · published 4.5
3.87
Byron Williams
usually #3 Doubles 100% · published 4.5
3.82
Bryan Little
usually #1 Doubles 75%, also #3 Doubles 13% · published 4
Michael Herzog
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.

Michael Herzog + Mark Waterstreet2342% gamesnot enough data
Jamie Marksberry + Mark Waterstreet5064% gamesnot enough data
Patrick McColgan + Mark Waterstreet134 matchesnot enough data
Vinh Thai + Griffin Celleghin404 matchesnot enough data
Alexander MacHtay + Griffin Celleghin224 matchesnot enough data
Matthew Esber + Griffin Celleghin303 matchesnot enough data
Patrick McColgan + Jamie Marksberry303 matchesnot enough data
Patrick McColgan + Byron Williams033 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.

Douglas Schoenly
6W–4L career · 1 line in 2026
<1%42%58%
4.53
Griffin Celleghin
52W–11L career · 4 lines in 2026
<1%50%50%
4.50
Nick Kowalczyk
27W–13L career · 7 lines in 2026
<1%78%22%
4.39
Matthew Esber
18W–11L career · 1 line in 2026
1%88%11%
4.33
Joey Frank
16W–16L career · 2 lines in 2026
3%93%4%
4.26
Jamie Marksberry
97W–40L career · 9 lines in 2026
3%93%4%
4.26
4.5
Aaron Koch
8W–2L career · no lines in 2026
not enough data
Mark Waterstreet
46W–34L career · 9 lines in 2026
4%93%3%
4.24
Vinh Thai
22W–3L career · 1 line in 2026
12%88%1%
4.17
Patrick McColgan
37W–30L career · 3 lines in 2026
15%85%1%
4.15
James Hackett
81W–26L career · 8 lines in 2026
24%76%<1%
4.10
4.5
Alexander MacHtay
18W–22L career · 5 lines in 2026
45%55%<1%
4.02
4.5
Ayush Kedia
19W–19L career · 4 lines in 2026
64%36%<1%
3.95
4.5
Byron Williams
10W–23L career · 2 lines in 2026
83%17%<1%
3.87
4
Bryan Little
145W–128L career · 8 lines in 2026
1%89%10%
3.82
Michael Herzog
16W–8L 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.