Teams

Twin Lakes (Doug Hartline)*

USTA Atlanta Summer - 18 & Over Men - Regular · 4.0 Men

15 players · average NTRP 3.88 / GEORGIA

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 →
Schedule6 played
2025-07-13vs TPC Sugarloaf (Jim Ogilvie)*Lost 23
W#1 DoublesFrankie Merkel / Mitchell Katz vs Stephen Adkins / Ryan Gribble6-3, 6-1
L#1 SinglesAlexander Zachos vs Jim Ogilvie6-1, 3-6, 1-6
L#2 DoublesBarrett Clark / Doug Hartline vs Joe Barillari / Kent Burdett1-6, 1-6
L#2 SinglesDylan Magel vs Gursanjit Bajwa6-7, 1-6
W#3 DoublesRichard Stauffer / John Nickerson vs Javier Gonzalez / Ram Pandit6-4, 6-4
2025-07-11vs Riverbrooke (Quinn Aguirre)*Lost 12
W#1 DoublesMitchell Katz / Alexander Zachos vs Matt Clark / Chris Smith6-4, 5-7, 1-0
L#2 DoublesBarrett Clark / Dylan Magel vs Quinn Aguirre / Andhika Sutjiadi4-6, 6-3, 3-6
L#3 DoublesDoug Hartline / Richard Catrambone vs Jeremy Grelle / Adam Meier3-6, 4-6
2025-06-29vs GAC (Mohammad Abdi)*Lost 13
L#1 DoublesMitchell Katz / Barrett Clark vs Adis Osmanbasic / SAN-FU WANG3-6, 1-6
L#1 SinglesAlexander Zachos vs Moses Tincher6-7, 4-6
W#2 DoublesJohn Heller / Dylan Magel vs Will VanSant / Ethan Vas7-6, 3-6, 6-4
L#3 DoublesWilliam Pearce / John Nickerson vs Dac Dao / Smit Valiani1-6, 0-6
2025-06-22vs Atlanta AC (Randy McMichael)*Lost 23
L#1 DoublesFrankie Merkel / Mitchell Katz vs Martin Strickler / Jonathan Berarducci3-6, 2-6
W#1 SinglesAlexander Zachos vs Tim Moxness6-4, 6-1
W#2 DoublesDavid Rappaport / Doug Hartline vs Randy McMichael / Tim Klespies6-3, 6-4
L#2 SinglesDylan Magel vs Chase Knox2-6, 6-3, 0-6
L#3 DoublesRichard Stauffer / John Nickerson vs Todd Bryant / James Reardon2-6, 0-6
2025-06-15vs Wheatfields Reserve (Todd Cole)*Lost 14
W#1 DoublesFrankie Merkel / Mitchell Katz vs Craig Collins / Anthony White6-3, 6-4
L#1 SinglesDylan Magel vs Nicolas Laracuente2-6, 4-6
L#2 DoublesDavid Rappaport / John Heller vs Austin Cole / Blane Holliday3-6, 7-5, 4-6
L#2 SinglesWilliam Pearce vs Ryan Kapper0-6, 0-6
L#3 DoublesRichard Stauffer / Doug Hartline vs Hunter Cole / Reece Morrow3-6, 4-6
2025-06-01vs WP Jones (Taejin Kang)*Lost 05
L#1 DoublesBarrett Clark / David Rappaport vs Derin Pek / Dave Kim3-6, 3-6
L#1 SinglesAlexander Zachos vs Young Choi0-6, 0-6
L#2 DoublesDoug Hartline / William Pearce vs Taejin Kang / Sung Yu0-6, 1-6
L#2 SinglesRichard Catrambone vs Sam Chung0-6, 0-6
L#3 DoublesRichard Stauffer / John Nickerson vs Wook Kim / Daniel Yim6-7, 4-6
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 standings31 teams · 4.0 Men
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 3.48 estimated across 11 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.

3.98
Frankie Merkel
usually #1 Doubles 100% · published
3.78
Mitchell Katz
usually #1 Doubles 100% · published
David Rappaport
published 4
3.64
Barrett Clark
usually #2 Doubles 50%, also #1 Doubles 50% · published 4
3.61
Alexander Zachos
usually #1 Singles 80%, also #1 Doubles 20% · published 4
3.58
Dylan Magel
usually #2 Singles 40%, also #2 Doubles 40% · published
3.48
Vail Thorne
published
3.30
William Pearce
usually #2 Singles 33%, also #2 Doubles 33% · published
3.28
Richard Stauffer
usually #3 Doubles 100% · published
3.26
Charles Moran
published 3.5
3.22
John Nickerson
usually #3 Doubles 100% · published
3.16
Doug Hartline
usually #2 Doubles 60%, also #3 Doubles 40% · published
Jeremy Boss
published
John Heller
usually #2 Doubles 100% · published
Richard Catrambone
usually #3 Doubles 50%, also #2 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.

Doug Hartline + John Nickerson2537% gamesnot enough data
Mitchell Katz + Frankie Merkel224 matchesnot enough data
Richard Stauffer + Doug Hartline134 matchesnot enough data
Richard Stauffer + John Nickerson134 matchesnot enough data
John Nickerson + Charles Moran044 matchesnot enough data
Richard Stauffer + Charles Moran033 matchesnot enough data
Doug Hartline + Charles Moran033 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.

Frankie Merkel
11W–4L career · 3 lines in 2026
<1%57%43%
3.98
Mitchell Katz
6W–10L career · 5 lines in 2026
2%92%5%
3.78
4
David Rappaport
0W–4L career · no lines in 2026
not enough data
4
Barrett Clark
2W–5L career · 4 lines in 2026
15%84%1%
3.64
4
Alexander Zachos
21W–12L career · 5 lines in 2026
22%77%<1%
3.61
Dylan Magel
12W–14L career · 5 lines in 2026
30%70%<1%
3.58
Vail Thorne
5W–4L career · no lines in 2026
<1%55%45%
3.48
William Pearce
3W–9L career · 3 lines in 2026
92%8%<1%
3.30
Richard Stauffer
7W–18L career · 4 lines in 2026
2%92%6%
3.28
3.5
Charles Moran
0W–16L career · no lines in 2026
3%92%4%
3.26
John Nickerson
3W–20L career · 4 lines in 2026
6%92%2%
3.22
Doug Hartline
6W–24L career · 5 lines in 2026
13%86%1%
3.16
Jeremy Boss
0W–7L career · no lines in 2026
not enough data
John Heller
3W–5L career · 2 lines in 2026
not enough data
Richard Catrambone
5W–9L career · 2 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.