Teams

WALNUT CREEK RC/Walnut Creek TC S70M6.0A

2025 ADULT 70&Over · Men 6.0

14 players · average NTRP 3.00 / NO. CALIFORNIA

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 →
Schedule8 played
2025-10-29vs LAFAYETTE TC S70M6.0AWon 30
W#1 DoublesLonnie Arroyo / Alan Biocca vs B Peter Maspaitella / Rick Silvani6-1, 7-6
W#2 DoublesBruce Koliha / Daniel Katzman vs Craig Smith / Raymond Teeling6-2, 6-2
W#3 DoublesRich Overby / Dale Lifson vs Gary Brundage / Jim Karas6-1, 6-3
2025-10-21vs CROW CANYON CC S70M6.0ALost 12
L#1 DoublesLonnie Arroyo / Michael Schmidt vs Edward Graff / Richard San Vicente2-6, 7-5, 0-1
L#2 DoublesBruce Koliha / Barry Greenwald vs George Masa / Terry Church6-7, 6-1, 0-1
W#3 DoublesMichael Bloomstein / Daniel Katzman vs Phillip Grove / David Pilosof6-0, 6-3
2025-10-09vs BAY TREES PK S70M6.0ALost 12
L#1 DoublesSteve Zalewski / Dale Lifson vs Rob Overton / Duane Duchscherer2-6, 2-6
L#2 DoublesMichael Bloomstein / Lonnie Arroyo vs Sherman Lin / Bob Koury3-6, 1-6
W#3 DoublesAlan Biocca / Daniel Katzman vs Rich Reitman / Bill Freeman4-6, 6-4, 1-0
2025-09-30vs BAY TREES PK S70M6.0AWon 21
W#1 DoublesLonnie Arroyo / Michael Schmidt vs Duane Duchscherer / Nick Halatsis6-0, 3-6, 1-0
W#2 DoublesBruce Koliha / William Ogden vs Rob Overton / Stanley Boehm6-1, 4-6, 1-0
L#3 DoublesBarry Greenwald / Daniel Katzman vs Bob Koury / Sherman Lin2-6, 2-6
2025-09-23vs LAFAYETTE TC S70M6.0AWon 21
L#1 DoublesRich Overby / Steve Zalewski vs SOLOMON CALAPATAN / B Peter Maspaitella1-6, 6-7
W#2 DoublesWilliam Ogden / Bruce Koliha vs Raymond Teeling / Michael Obrien6-3, 6-1
W#3 DoublesJohn Kreiter / Michael Schmidt vs Jim Karas / Thomas Nolan7-6, 6-1
2025-09-18vs CROW CANYON CC S70M6.0AWon 21
L#1 DoublesDaniel Katzman / Alexander Warren vs Ignatius Chan / Terry Feng5-7, 2-6
W#2 DoublesAlan Biocca / Lonnie Arroyo vs John Moore / Gary Peer6-1, 6-1
W#3 DoublesBruce Koliha / Matt Walsh vs Dinesh Bajaj / George Masa6-2, 6-2
2025-09-09vs CROW CANYON CC S70M6.0ALost 12
L#1 DoublesLonnie Arroyo / Barry Greenwald vs Terry Feng / Edward Graff3-6, 1-6
W#2 DoublesWilliam Ogden / Bruce Koliha vs David Pilosof / Phillip Grove7-6, 6-4
L#3 DoublesMichael Bloomstein / Hess Rouhafza vs George Masa / Dinesh Bajaj6-7, 4-6
2025-09-02vs BAY TREES PK S70M6.0ALost 03
L#1 DoublesWilliam Ogden / Daniel Katzman vs Duane Duchscherer / Stuart Gronningen1-6, 6-4, 0-1
L#2 DoublesLonnie Arroyo / Barry Greenwald vs Bob Koury / Sherman Lin2-6, 6-2, 0-1
L#3 DoublesHess Rouhafza / John Kreiter vs Bill Freeman / Rich Reitman1-6, 6-2, 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 Men 6.0 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 2.73 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.

Alexander Warren
usually #1 Doubles 100% · published 3.5
3.12
Alan Biocca
usually #2 Doubles 33%, also #1 Doubles 33% · published 3
2.94
Daniel Katzman
usually #3 Doubles 50%, also #1 Doubles 33% · published 3
2.81
Lonnie Arroyo
usually #1 Doubles 57%, also #2 Doubles 43% · published
2.76
Bruce Koliha
usually #2 Doubles 83%, also #3 Doubles 17% · published 3
2.63
Dale Lifson
usually #3 Doubles 50%, also #1 Doubles 50% · published 3
2.57
Rich Overby
usually #3 Doubles 50%, also #1 Doubles 50% · published
2.57
Barry Greenwald
usually #2 Doubles 50%, also #3 Doubles 25% · published 2.5
2.42
Steve Zalewski
usually #1 Doubles 100% · published
Hess Rouhafza
usually #3 Doubles 100% · published
John Kreiter
usually #3 Doubles 100% · published
Matt Walsh
usually #3 Doubles 100% · published
Michael Bloomstein
usually #3 Doubles 67%, also #2 Doubles 33% · published
William Ogden
usually #2 Doubles 75%, also #1 Doubles 25% · 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.

William Ogden + Bruce Koliha303 matchesnot enough data
Daniel Katzman + Alan Biocca123 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.

3.5
Alexander Warren
18W–15L career · 1 line in 2025
not enough data
3
Alan Biocca
16W–3L career · type A · 3 lines in 2025
<1%20%80%
3.12
3
Daniel Katzman
5W–6L career · 6 lines in 2025
<1%67%33%
2.94
Lonnie Arroyo
13W–16L career · 7 lines in 2025
1%90%9%
2.81
3
Bruce Koliha
11W–2L career · 6 lines in 2025
3%93%4%
2.76
3
Dale Lifson
5W–4L career · 2 lines in 2025
18%81%<1%
2.63
Rich Overby
6W–13L career · 2 lines in 2025
30%70%<1%
2.57
2.5
Barry Greenwald
6W–4L career · type A · 4 lines in 2025
0%32%68%
2.57
Steve Zalewski
1W–12L career · 2 lines in 2025
72%28%<1%
2.42
Hess Rouhafza
0W–5L career · 2 lines in 2025
not enough data
John Kreiter
1W–2L career · 2 lines in 2025
not enough data
Matt Walsh
9W–8L career · 1 line in 2025
not enough data
Michael Bloomstein
4W–5L career · 3 lines in 2025
not enough data
William Ogden
5W–6L career · 4 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.