Teams

SGV Underdogs Titans-Le-Diamond Bar HS/SU8

2025 Adult Division - 40& Over San Gabriel Valley · SGV - Men 4.0

14 players · average NTRP 3.67 / SO.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 →
Schedule4 played
W#1 DoublesMark Stone / Eric Chen vs Jerry Waliry / Jesse Huang6-3, 6-4
L#1 SinglesCHENG QIAN vs Edgardo Cuellar3-6, 3-6
W#2 DoublesTom Le / Gerald Alphonse vs David Johnson / Leo Bautista4-6, 6-4, 1-0
L#1 DoublesMark Stone / Matthew Huang vs Hao Truong / Daniel Kanemoto3-6, 5-7
W#1 SinglesCHENG QIAN vs Andrew Lee6-3, 2-6, 1-0
L#2 DoublesChandrasekar Chinnathambi / Tom Le vs John Proulx / Hugh Allen5-7, 1-6
L#3 DoublesRonald Legaspi / Ruben Ron vs Judd Tongprajiad / Yim Tse0-6, 6-7
W#1 DoublesMatthew Huang / Mark Stone vs George Rodriguez / Martin Vasquez6-2, 5-7, 1-0
L#2 DoublesRudy Tatang / Eric Chen vs Andy Tromans / Elik Alvarez3-6, 6-4, 1-0
W#3 DoublesPrem Dhanendran / Gang Dai vs Ben Cardenas / Adam Acosta7-6, 6-0
W#1 DoublesMark Stone / Sudhagar Subbiyan vs Vladimir Abadzhev / Sabestian Black7-6, 4-6, 1-0
L#1 SinglesCHENG QIAN vs Simon Kim1-6, 4-6
L#2 DoublesOscar Oyama / Tom Le vs John Tatoulian / Dave Sparks4-6, 1-6
L#3 DoublesRudy Tatang / Ruben Ron vs Tomas Wong / Ferdinand Fontanilla3-6, 2-6
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 standings for SGV - Men 4.0 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 3.43 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.

Chandrasekar Chinnathambi
usually #2 Doubles 100% · published 4
3.57
Ronald Legaspi
usually #3 Doubles 100% · published
3.56
Mark Stone
usually #1 Doubles 100% · published
3.56
Venk Tatineni
published
3.55
Matthew Huang
usually #1 Doubles 100% · published
3.42
Rudy Tatang
usually #1 Doubles 43%, also #1 Singles 29% · published
3.35
Gerald Alphonse
usually #2 Doubles 100% · published
CHENG QIAN
usually #1 Singles 80%, also #2 Doubles 20% · published 3.5
Chinna Ponnaganti
published 3.5
3.22
Ruben Ron
usually #1 Doubles 57%, also #3 Doubles 43% · published
3.21
Oscar Oyama
usually #1 Doubles 75%, also #2 Doubles 25% · published
Gang Dai
usually #3 Doubles 100% · published
Prem Dhanendran
usually #3 Doubles 100% · published
Sudhagar Subbiyan
usually #1 Doubles 100% · 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.

Oscar Oyama + Ruben Ron5160% games+4.2% vs expected
Rudy Tatang + Ruben Ron4352% games+4.1% vs expected
Gerald Alphonse + Oscar Oyama303 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.

4
Chandrasekar Chinnathambi
1W–2L career · 1 line in 2025
not enough data
Ronald Legaspi
3W–5L career · 1 line in 2025
30%70%<1%
3.57
Mark Stone
9W–5L career · 4 lines in 2025
32%68%<1%
3.56
Venk Tatineni
7W–8L career · no lines in 2025
33%67%<1%
3.56
Matthew Huang
4W–3L career · 2 lines in 2025
37%63%<1%
3.55
Rudy Tatang
13W–10L career · 7 lines in 2025
<1%<1%>99%
3.42
Gerald Alphonse
22W–6L career · 4 lines in 2025
<1%1%99%
3.35
3.5
CHENG QIAN
3W–2L career · 5 lines in 2025
not enough data
3.5
Chinna Ponnaganti
1W–4L career · no lines in 2025
not enough data
Ruben Ron
18W–14L career · 7 lines in 2025
<1%6%94%
3.22
Oscar Oyama
14W–6L career · 4 lines in 2025
<1%6%94%
3.21
Gang Dai
2W–1L career · 1 line in 2025
not enough data
Prem Dhanendran
1W–0L career · 1 line in 2025
not enough data
Sudhagar Subbiyan
3W–1L career · 1 line 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.