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MAC-Turnbull/Hergenhan

2025 Adult 55 & Over · 8.0 Men

14 players · average NTRP 3.96 · USTA/PACIFIC NW / NORTHERN OREGON

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Scouting

Roster averages 3.62 estimated across 12 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.

4.01
Jim Fredericks
usually #1 Doubles 88%, also #2 Doubles 13% · published 4
—
James Hockley
published 4
—
Kevin Pedigo
usually #2 Doubles 67%, also #3 Doubles 33% · published 4
3.73
Brian Posewitz
published 4
3.71
William Hergenhan
usually #2 Doubles 60%, also #3 Doubles 40% · published 4
3.63
James Ringelberg
usually #1 Doubles 43%, also #2 Doubles 29% · published 4
3.61
Donald Brenneman
usually #3 Doubles 100% · published 4
3.60
Chris Hasle
published 4
3.60
Patrick Herbst
usually #3 Doubles 50%, also #2 Doubles 50% · published 4
3.59
David Hill
published 4
3.59
Ben Jacobson
usually #3 Doubles 100% · published 4
3.58
Todd Eckelman
usually #3 Doubles 50%, also #2 Doubles 50% · published 4
3.57
Thomas Turnbull
usually #3 Doubles 100% · published 4
3.18
Rudy Martinez
usually #3 Doubles 67%, also #1 Doubles 33% · published 3.5
Results12 ties
2025-09-13Won 1–0
W#3 DoublesDonald Brenneman / Jeffrey Krum vs Douglas Verdieck / Vincent La Cava6-3, 4-6, 1-0
2025-09-11Won 1–0
W#3 DoublesDonald Brenneman / Jeffrey Krum vs Jeff Brantner / Wally Morrison7-6, 1-6, 1-0
2024-12-08Lost 1–2
L#1 DoublesJim Fredericks / John Hall vs Derek Carlson / Edmundo Arroyo6-1, 6-4
L#2 DoublesTodd Eckelman / Patrick Herbst vs Doug Matheson / Patrick Harkin6-4, 2-6, 1-0
W#3 DoublesJames Ringelberg / Thomas Turnbull vs Edmund Yuan / Robert Truong6-2, 5-7, 1-0
2024-12-07Won 2–0
W#2 DoublesJohn Hall / Jim Fredericks vs Tom Lonergan / Carlin Jackson6-2, 6-3
W#3 DoublesThomas Turnbull / Rudy Martinez vs Sean Gay / Tae Yoon6-3, 6-2
2024-11-24Won 3–0
W#1 DoublesJames Ringelberg / Jim Fredericks vs Cuong Nguyen / Tony Khamsouk6-4, 6-4
W#2 DoublesBrian Posewitz / William Hergenhan vs Neil Soiffer / Kelly Small7-5, 6-0
W#3 DoublesBrian Jones / Kevin Pedigo vs Len Morales / Rudd McGarity5-7, 6-4, 1-0
2024-11-23Won 2–0
W#1 DoublesJim Fredericks / James Ringelberg vs Michael Kazangian / Steve Sun7-6, 7-6
W#3 DoublesDonald Brenneman / Ben Jacobson vs Shung Shin / Dean Gaylor6-2, 4-6, 1-0
2024-11-17Won 3–0
W#1 DoublesJim Fredericks / James Ringelberg vs John Major / Clark Cosart6-0, 6-2
W#2 DoublesKevin Pedigo / Brian Jones vs Jonathan Caplan / Craig Hlady6-2, 6-2
W#3 DoublesPatrick Herbst / William Hergenhan vs Brad Socolofsky / Ted Rose6-4, 6-4
2024-11-10Lost 0–3
L#1 DoublesJohn Hall / Jim Fredericks vs Steve Fogg / Paul Garry6-3, 7-6
L#2 DoublesJames Ringelberg / Brian Jones vs Jeroen Swanborn / Michael Chang6-4, 6-1
L#3 DoublesPatrick Herbst / Donald Brenneman vs Jae Joon Kang / Richard Jackson7-5, 6-1
2024-11-03Won 3–0
W#1 DoublesJim Fredericks / John Hall vs Steve Eggerts / Jack Schunk6-4, 3-6, 1-0
W#2 DoublesBrian Posewitz / Patrick Herbst vs Ken Avenoso / Keith Abel6-4, 7-5
W#3 DoublesJames Ringelberg / Brian Jones vs Eric Goldner / Donald Pettitt6-4, 7-5
2024-10-13Split 1–1
L#2 DoublesPatrick Herbst / James Ringelberg vs Gareth Hosford / Jason Dortch6-1, 6-4
W#3 DoublesHarry Semler / William Hergenhan vs Hyungje Woo / Tony Moreno6-3, 6-4
2024-10-05Lost 1–2
L#1 DoublesBrian Jones / Rudy Martinez vs Tom Lux / John Droege6-1, 6-3
L#2 DoublesJohn Hall / William Hergenhan vs Mark King / Toby Krauel6-3, 6-4
W#3 DoublesTodd Eckelman / Patrick Herbst vs Ken Nichols / Scott Powers6-2, 6-3
2024-09-21Won 3–0
W#1 DoublesJim Fredericks / Brian Posewitz vs Matt Bolte / Stefan Olander6-4, 6-2
W#2 DoublesKevin Pedigo / William Hergenhan vs Kerry Jantzi / James Horen6-4, 6-4
W#3 DoublesThomas Turnbull / Rudy Martinez vs Stanley Mo / Michael Rollyson6-3, 6-4
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.
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.

4
Jim Fredericks
46W–9L career
0%74%26%
4.01
4
James Hockley
31W–23L career · type S
not enough data
—
4
Kevin Pedigo
10W–6L career
not enough data
—
4
Brian Posewitz
45W–35L career
2%98%0%
3.73
4
William Hergenhan
56W–42L career
7%91%1%
3.71
4
James Ringelberg
73W–77L career
8%92%0%
3.63
4
Donald Brenneman
44W–55L career
16%84%0%
3.61
4
Chris Hasle
55W–54L career
24%75%1%
3.60
4
Patrick Herbst
44W–45L career
18%82%0%
3.60
4
David Hill
48W–38L career
17%83%0%
3.59
4
Ben Jacobson
18W–35L career
21%79%0%
3.59
4
Todd Eckelman
33W–36L career
21%79%0%
3.58
4
Thomas Turnbull
86W–92L career
16%84%0%
3.57
3.5
Rudy Martinez
45W–105L career
3%97%0%
3.18

Three percentages are the year-end projection — chance of moving down, staying, moving up — and the number on the right is our estimated dynamic rating, which USTA never publishes. 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.