Teams

IA/Duhautois/18&Over7.0X

2025 IA 18 & Over Adult Mixed League · 7.0 X'd 18 Over

11 players · average NTRP 4.00 / IOWA

View scouting list →
Schedule6 played
2024-12-20vs AvilezWon 21
W#1 DoublesGreyson Heiskell / Anne Pham vs Ruben Avilez / Jennifer Hough6-1, 6-0
W#2 DoublesMike Sylvester / Sarah Zinn-Burggraaf vs Dan Determan / Keaton Pulver6-1, 6-4
L#3 DoublesCalla Whipp / Tony DAntuono vs Nathan Johnston / Patty Avilez4-6, 7-5, 0-1
2024-11-22vs AvilezLost 12
L#1 DoublesJulien Duhautois / Petra Chang vs Dan Determan / Keaton Pulver2-6, 0-6
L#2 DoublesJessica Stewart / Jason Wingert vs Casey Claypool / Nick Stahly1-6, 0-6
W#3 DoublesJohn Karrmann / Lindsay Ruppert vs Ruben Avilez / Keren Terry4-6, 6-4, 1-0
2024-11-17vs HeilWon 21
W#1 DoublesSarah Zinn-Burggraaf / Mike Sylvester vs Richard Heil / Ann Mincks5-7, 6-4, 1-0
W#2 DoublesPetra Chang / Julien Duhautois vs Bryce Johnson / Andrea Arias6-2, 6-1
L#3 DoublesJason Wingert / Jessica Stewart vs Brandon Willett / Karin Beschen2-6, 3-6
2024-11-08vs HeilWon 21
W#1 DoublesPetra Chang / Julien Duhautois vs Corinne Goode / Bryce Johnson6-4, 7-6
L#2 DoublesJason Wingert / Sarah Zinn-Burggraaf vs Ronald Bradfield / Andrea Arias1-6, 4-6
W#3 DoublesCalla Whipp / Greyson Heiskell vs Karin Beschen / Brian Selby6-1, 6-2
2024-10-04vs AvilezWon 21
W#1 DoublesLindsay Ruppert / John Karrmann vs Justin Hattan / Stephanie Anania6-2, 6-2
W#2 DoublesGreyson Heiskell / Anne Pham vs Matthew Whipps / Candy Vandewater6-4, 6-4
L#3 DoublesTony DAntuono / Calla Whipp vs Nick Stahly / Casey Claypool3-6, 5-7
2024-09-20vs HeilWon 21
W#1 DoublesSarah Zinn-Burggraaf / Mike Sylvester vs Bryce Johnson / Corinne Goode6-1, 6-4
L#2 DoublesCalla Whipp / Tony DAntuono vs Andrea Arias / Ronald Bradfield6-3, 2-6, 1-0
W#3 DoublesJohn Karrmann / Lindsay Ruppert vs Karin Beschen / Richard Heil6-4, 6-2
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 standings3 teams · 7.0 X'd 18 Over
TeamWLInd. WInd. LSets lostGames lost
1IA/Duhautois/18&Over7.0X5111716148
2Avilez339920161
3Patten/Wasta1551329188

Ordered by team wins, then losses, then sets lost — the order USTA uses to seed a flight. Individual wins are lines, not ties.

See the full flight, with every team’s record

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 3.53 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.

3.81
Calla Whipp
usually #3 Doubles 86%, also #2 Doubles 14% · published 4
3.77
Anne Pham
usually #2 Doubles 50%, also #3 Doubles 25% · published 4
Greyson Heiskell
usually #2 Doubles 33%, also #3 Doubles 33% · published 4
3.75
Mike Sylvester
usually #1 Doubles 60%, also #3 Doubles 20% · published
3.75
Julien Duhautois
usually #1 Doubles 67%, also #3 Doubles 17% · published
3.46
Sarah Zinn-Burggraaf
usually #1 Doubles 57%, also #2 Doubles 29% · published
3.44
Lindsay Ruppert
usually #3 Doubles 67%, also #1 Doubles 33% · published
3.34
John Karrmann
usually #3 Doubles 67%, also #1 Doubles 33% · published
2.94
Jason Wingert
usually #2 Doubles 60%, also #3 Doubles 40% · published
Petra Chang
usually #1 Doubles 67%, also #2 Doubles 33% · published
Tony DAntuono
usually #3 Doubles 67%, also #2 Doubles 33% · 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.

Anne Pham + Greyson Heiskell5076% games+27.0% vs expected
Calla Whipp + Tony DAntuono3454% games+8.4% vs expected
Julien Duhautois + Petra Chang7353% gamesnot enough data
John Karrmann + Lindsay Ruppert404 matchesnot enough data
Sarah Zinn-Burggraaf + Mike Sylvester303 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
Calla Whipp
41W–33L career · 7 lines in 2025
1%92%7%
3.81
4
Anne Pham
99W–29L career · 8 lines in 2025
2%94%4%
3.77
4
Greyson Heiskell
17W–11L career · 3 lines in 2025
not enough data
Mike Sylvester
20W–4L career · 5 lines in 2025
3%95%3%
3.75
Julien Duhautois
23W–20L career · 6 lines in 2025
3%95%2%
3.75
Sarah Zinn-Burggraaf
70W–53L career · 7 lines in 2025
<1%64%36%
3.46
Lindsay Ruppert
78W–60L career · 3 lines in 2025
<1%69%31%
3.44
John Karrmann
30W–14L career · 3 lines in 2025
<1%89%10%
3.34
Jason Wingert
19W–13L career · 5 lines in 2025
<1%68%32%
2.94
Petra Chang
13W–7L career · 3 lines in 2025
not enough data
Tony DAntuono
22W–34L career · 3 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.