Teams

Zoltek -Tek-nically 4.0's

2025 Frederick Adult 40 & Over · Frederick Adult 40 & Over 4.0 Men

10 players · average NTRP 3.88 / MARYLAND

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Schedule10 played
2025-04-13vs Harvin - 4.0 Star AccommodationsWon 20
W#1 DoublesMichael Erdely / Joshua Zoltek vs Bruce Matthews / Dennis Weikel6-3, 6-2
W#2 DoublesJoseph Bahorich / Kevin Hill vs Kevin Gass / Phillip Harvin6-3, 6-0
2025-04-06vs Harvin - 4.0 Star AccommodationsSplit 11
L#2 DoublesMichael Erdely / Ivan Kozliak vs Bruce Matthews / David Madsen0-6, 2-6
W#3 DoublesJoshua Zoltek / Derek Johnson vs Doug Strong / Dennis Weikel6-1, 6-1
2025-04-02vs Harvin - 4.0 Star AccommodationsWon 21
L#1 DoublesJoseph Bahorich / Jonathan Rivera vs Kevin Gass / David Madsen2-6, 1-6
W#2 DoublesIvan Kozliak / Michael Erdely vs Glen Medina / Phillip Harvin6-3, 7-5
W#3 DoublesJoshua Zoltek / Kevin Hill vs Bryan Kay / Henry Forster4-6, 7-6, 1-0
2025-03-30vs Harvin - 4.0 Star AccommodationsWon 10
W#1 DoublesJoshua Zoltek / Michael Erdely vs Glen Medina / Henry Forster7-5, 6-3
2025-03-27vs Harvin - 4.0 Star AccommodationsSplit 11
L#1 DoublesMichael Erdely / Christopher Lee vs Eric DesRoberts / David Madsen3-6, 0-6
W#3 DoublesJoseph Bahorich / Derek Johnson vs Glen Medina / Phillip Harvin6-0, 6-2
2025-03-22vs Harvin - 4.0 Star AccommodationsLost 12
L#1 DoublesJuan Jose Tijero / Jonathan Rivera vs Eric DesRoberts / David Madsen2-6, 4-6
L#2 DoublesDerek Johnson / Joseph Bahorich vs Dennis Weikel / Christopher Bullman3-6, 6-4, 1-0
W#3 DoublesKevin Hill / Ivan Kozliak vs Kevin Gass / Joseph Kowalczyk6-4, 1-6, 1-0
2025-03-18vs Harvin - 4.0 Star AccommodationsSplit 11
W#1 DoublesJonathan Rivera / Joshua Zoltek vs Eric DesRoberts / Glen Medina7-5, 6-0
L#2 DoublesMichael Erdely / Kevin Hill vs Kevin Gass / Doug Strong2-6, 4-6
2025-03-10vs Harvin - 4.0 Star AccommodationsWon 21
L#1 DoublesJuan Jose Tijero / Michael Erdely vs Eduardo Munoz Corona / Glen Medina6-7, 2-6
W#2 DoublesJoshua Zoltek / Kevin Hill vs Eric DesRoberts / Dennis Weikel3-6, 6-4, 1-0
W#3 DoublesJoseph Bahorich / Derek Johnson vs Henry Forster / Kevin Gass4-6, 6-4, 1-0
2025-03-08vs Harvin - 4.0 Star AccommodationsLost 12
L#1 DoublesJoshua Zoltek / Jonathan Rivera vs Eric DesRoberts / Kevin Gass3-6, 5-7
L#2 DoublesIvan Kozliak / Connor Newlon vs Christopher Bullman / David Madsen0-6, 0-6
W#3 DoublesDerek Johnson / Joseph Bahorich vs Doug Strong / Joseph Kowalczyk7-6, 6-3
2025-03-03vs Harvin - 4.0 Star AccommodationsLost 12
L#1 DoublesJuan Jose Tijero / Michael Erdely vs Eduardo Munoz Corona / David Madsen2-6, 2-6
W#2 DoublesJoshua Zoltek / Jonathan Rivera vs Kevin Gass / Doug Strong6-1, 6-4
L#3 DoublesJoseph Bahorich / Ivan Kozliak vs Christopher Bullman / Dennis Weikel1-6, 0-6
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 Frederick Adult 40 & Over 4.0 Men 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 3.70 estimated across 9 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.

4.13
Joshua Zoltek
usually #1 Doubles 50%, also #2 Doubles 25% · published 4
3.84
Derek Johnson
published 3.5
3.80
Juan Jose Tijero
usually #1 Doubles 100% · published 4
Christopher Lee
published 4
3.72
Michael Erdely
usually #1 Doubles 63%, also #2 Doubles 38% · published 4
3.72
Jonathan Rivera
published
3.67
Kevin Hill
published
3.60
Ivan Kozliak
usually #2 Doubles 60%, also #3 Doubles 40% · published 4
3.59
Joseph Bahorich
usually #3 Doubles 57%, also #2 Doubles 29% · published 4
3.23
Connor Newlon
published 3.5
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.

Kevin Hill + Derek Johnson12066% games+7.6% vs expected
Juan Jose Tijero + Michael Erdely4348% gamesnot enough data
Juan Jose Tijero + Joshua Zoltek6161% gamesnot enough data
Ivan Kozliak + Joshua Zoltek1442% gamesnot enough data
Michael Erdely + Joshua Zoltek314 matchesnot enough data
Joseph Bahorich + Joshua Zoltek314 matchesnot enough data
Joshua Zoltek + Kevin Hill404 matchesnot enough data
Juan Jose Tijero + Joseph Bahorich033 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
Joshua Zoltek
236W–137L career · 8 lines in 2025
<1%19%81%
4.13
3.5
Derek Johnson
58W–15L career · no lines in 2025
<1%1%99%
3.84
4
Juan Jose Tijero
605W–364L career · 3 lines in 2025
1%90%8%
3.80
4
Christopher Lee
13W–7L career · no lines in 2025
not enough data
4
Michael Erdely
206W–159L career · 8 lines in 2025
6%92%2%
3.72
Jonathan Rivera
17W–7L career · no lines in 2025
6%92%2%
3.72
Kevin Hill
59W–14L career · no lines in 2025
<1%11%89%
3.67
4
Ivan Kozliak
300W–286L career · 5 lines in 2025
25%75%<1%
3.60
4
Joseph Bahorich
194W–157L career · 7 lines in 2025
27%73%<1%
3.59
3.5
Connor Newlon
1W–2L career · no lines in 2025
5%92%3%
3.23

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.