Diamond, Jonathan

USTA ID

2007492446

Gender

Male

Location

Homer Glen, IL

WTN ID

DIA4863621

TennisLink · USTA · WTN

Active Flights

M 4.5 Winter

Naper (Schmidt)

Mixed 9.0 Winter

Wlmt (Nakamura)

NTRP Ratings

Rating	Type	Year	Date	Expires
4.5	C	2025	Dec. 31, 2025	Dec. 31, 2028

WTN Ratings

Singles

25.42

Confidence 20 · 23.6–27.3

Doubles

22.79

Confidence 80 · 21.1–24.5

Position Distribution

Men's Combo 4.5

14 matches

1# Doubles

6 (43%)

1# Singles

1 (7%)

2# Doubles

5 (36%)

3# Doubles

2 (14%)

Men's Doubles 5.0

2 matches

2 (100%)

Men's Doubles 8.5

1 match

1# Doubles

1 (100%)

Mixed Doubles 8.0

7 matches

1# Doubles

3 (43%)

2# Doubles

2 (29%)

3# Doubles

2 (29%)

Mixed Doubles 8.5

3 matches

2# Doubles

1 (33%)

3# Doubles

2 (67%)

Mixed Doubles 9.0

11 matches

1# Doubles

4 (36%)

2# Doubles

3 (27%)

3# Doubles

4 (36%)

Partners

Partner	W	L	xW	Together
George Botha	3	1	4.0	4
Mary Therese Lee	1	2	1.9	3
Hans-Joerg Engler	3	0	2.1	3
Margaret Weiss	2	1	2.0	3
Nicole Tyulpa	2	0	1.3	2
Marialin Lomongo	2	0	1.6	2
Ashley Kaufman	2	0	1.4	2
Bonny Tovar	2	0	1.3	2
Kamile Stadalninkaite	0	2	1.7	2
Cary Welsh	1	0	0.3	1
Claudia Ma	1	0	0.7	1
David Maxson	1	0	0.5	1
Kim Kuwabara	1	0	0.7	1
Denise Lam	1	0	0.9	1
Mattas Ciabilis	0	1	0.8	1
Sarah Monteagudo	1	0	0.9	1
Ayano Nakamura	1	0	1.0	1
Deniz Karacay	1	0	0.9	1
Brent Hargrave	1	0	0.5	1
Michael Hess	0	1	0.2	1
Christian Lynn	1	0	0.9	1

Opponents

Opponent	W	L	xW	Faced
Bill Bowman	2	1	2.6	3
Jason Strongin	1	1	1.0	2
Igor Gogov	2	0	1.4	2
Marianne Sharping	2	0	1.4	2
Alice Copland	0	2	1.3	2
Michael Yong	1	1	1.6	2
Andrew Wolfberg	0	2	1.1	2
Brittany Khayet	2	0	1.6	2
Dennis Kontorovich	2	0	1.9	2
Kevin Zimmerman	1	0	0.3	1
Justin Hetler	1	0	1.0	1
Ryan Pfeifle	1	0	1.0	1
Christine Meade	1	0	0.8	1
Ian Barr	1	0	0.8	1
Michael Baddeloo	0	1	0.5	1
Alistair Templeton	1	0	0.7	1
Max Soghikian	1	0	0.7	1
Yuko Suzuki	1	0	0.7	1
Ethan Fowler	1	0	0.7	1
Michael Czarny	1	0	0.7	1
Sara Desai	1	0	0.7	1
Nicholas Hebda	0	1	0.4	1
Thomas Batka	1	0	0.7	1
Monica Shah	1	0	0.7	1
Todd Dahlquist	0	1	0.3	1
Ana Chang	0	1	0.3	1
Wesley Madara	1	0	0.8	1
Heather Vishnubhakat	1	0	0.8	1
Kiwon Nam	1	0	0.8	1
Lida Downey	1	0	0.8	1
Mitchell Rasley	1	0	1.0	1
Anthony Groce	1	0	0.9	1
Travis Reimers	1	0	0.6	1
Ravi Jhaveri	1	0	1.0	1
Ritwik Khare	1	0	1.0	1
Brian Thomason	0	1	0.8	1
Adam Reinhart	0	1	0.8	1
Huan Chang	1	0	0.9	1
Andrew Meyer	1	0	0.8	1
Agnieszka Filipek	1	0	0.8	1
Brittany Ballog	0	1	0.7	1
Stanley Opalka	0	1	0.7	1
Bharani Sankar	0	1	0.8	1
Cynthya Goulet	0	1	0.9	1
Jacob Mayles	0	1	0.9	1
Michele Ihlanfeldt	1	0	0.9	1
Isabel Quinones	1	0	1.0	1
Joseph Shmigelsky	1	0	1.0	1
John Mysz	1	0	0.9	1
Jan Greszta	1	0	0.9	1
Zsolt Juhasz	0	1	0.2	1
Joshua Luetkehans	0	1	0.2	1
Jake Minner	1	0	0.9	1
Mariusz Biernacki	1	0	0.9	1
Edwin Baldwin	1	0	0.7	1
Brad Smith	1	0	0.7	1
Ryan Rymarzak	0	1	0.3	1

Match History (38)

Date	Flight	Pos	Partner	Opponent(s)	Score	P(win)	Result
4/17/2026	Mixed 9.0 Winter	3# Doubles	Nicole Tyulpa		6-0 6-0		W
3/22/2026	M 4.5 Winter	2# Doubles	Cary Welsh	Kevin Zimmerman / Jason Strongin	3-6 6-3 1-0	27%	W
2/1/2026	Mixed 9.0 Winter	3# Doubles	Marialin Lomongo	Igor Gogov / Marianne Sharping	7-6 6-2	75%	W
1/24/2026	M 4.5 Winter	2# Doubles	George Botha	Justin Hetler / Ryan Pfeifle	7-5 6-4	98%	W
12/21/2025	Mixed 9.0	2# Doubles	Nicole Tyulpa	Christine Meade / Ian Barr	7-6 6-0	75%	W
12/7/2025	Mixed 9.0	1# Doubles	Mary Therese Lee	Alice Copland / Michael Baddeloo	6-4 6-4	51%	L
11/14/2025	Mixed 9.0	2# Doubles	Mary Therese Lee	Marianne Sharping / Igor Gogov	2-6 7-5 1-0	66%	W
11/8/2025	Men 4.5	1# Doubles	Hans-Joerg Engler	Alistair Templeton / Max Soghikian	4-6 6-2 1-0	72%	W
11/7/2025	Combo Mix 8.5 Fall	3# Doubles	Claudia Ma	Yuko Suzuki / Ethan Fowler	6-4 6-2	71%	W
9/27/2025	Men 4.5	1# Doubles	George Botha	Bill Bowman / Michael Yong	6-4 7-6	99%	L
8/10/2025	Combo Mix 8.5 Summer	2# Doubles	Ashley Kaufman	Michael Czarny / Sara Desai	6-3 6-3	70%	W
7/11/2025	Men High 4.0/4.5/5.0		Peter Shields	Nicholas Hebda / Andrew Wolfberg	6-3 6-4	39%	L
7/2/2025	Combo Mix 8.5 Summer	3# Doubles	Ashley Kaufman	Thomas Batka / Monica Shah	6-4 6-4	73%	W
6/22/2025	Combo M 8.5 Summer	1# Doubles	David Maxson		6-0 6-0		W
5/16/2025	Men High 4.0/4.5/5.0		Seisuke Narita	Andrew Wolfberg / Jason Strongin	6-3 6-5	71%	L
4/27/2025	Mixed 8.0 Winter	1# Doubles	Margaret Weiss	Todd Dahlquist / Ana Chang	6-2 6-2	34%	L
4/18/2025	Mixed 8.0 Winter	2# Doubles	Margaret Weiss	Wesley Madara / Heather Vishnubhakat	6-1 6-1	83%	W
4/12/2025	Mixed 8.0 Winter	2# Doubles	Kim Kuwabara	Brittany Khayet / Bill Bowman	6-4 6-5	71%	W
4/6/2025	Mixed 8.0 Winter	1# Doubles	Margaret Weiss	Kiwon Nam / Lida Downey	7-6 5-4	83%	W
3/9/2025	M 4.5 Winter	2# Doubles	George Botha	Mitchell Rasley / Dennis Kontorovich	6-4 6-4	100%	W
2/23/2025	Mixed 8.0 Winter	3# Doubles	Denise Lam	Anthony Groce / Brittany Khayet	6-0 6-3	93%	W
2/15/2025	M 4.5 Winter	3# Doubles	Hans-Joerg Engler	Michael Yong / Travis Reimers	6-3 6-0	61%	W
2/8/2025	M 4.5 Winter	3# Doubles	George Botha	Ravi Jhaveri / Ritwik Khare	6-2 6-2	100%	W
1/25/2025	M 4.5 Winter	1# Doubles	Mattas Ciabilis	Brian Thomason / Adam Reinhart	6-3 6-0	85%	L
7/28/2024	9.0 Mixed Summer	3# Doubles	Marialin Lomongo	Huan Chang / Dennis Kontorovich	6-4 6-0	86%	W
7/20/2024	8.0 Mixed Summer	1# Doubles	Bonny Tovar	Andrew Meyer / Agnieszka Filipek	6-2 6-4	81%	W
7/14/2024	9.0 Mixed Summer	2# Doubles	Mary Therese Lee	Brittany Ballog / Stanley Opalka	3-6 6-2 1-0	71%	L
7/14/2024	8.0 Mixed Summer	3# Doubles	Bonny Tovar		6-0 6-0		W
2/4/2024	9.0 Mixed Winter	1# Doubles	Kamile Stadalninkaite	Alice Copland / Bharani Sankar	6-1 3-6 1-0	80%	L
12/10/2023	Mixed 9.0	1# Doubles	Kamile Stadalninkaite	Cynthya Goulet / Jacob Mayles	6-2 6-2	86%	L
11/12/2023	Mixed 9.0	1# Doubles	Sarah Monteagudo	Michele Ihlanfeldt / Bill Bowman	6-2 6-3	88%	W
10/15/2023	Mixed 9.0	3# Doubles	Ayano Nakamura	Isabel Quinones / Joseph Shmigelsky	6-2 6-0	97%	W
4/30/2023	M 4.5 Winter	2# Doubles	Deniz Karacay	John Mysz / Jan Greszta	6-3 6-2	87%	W
4/15/2023	M 4.5 Winter	1# Doubles	Brent Hargrave		6-0 6-0		W
3/18/2023	M 4.5 Winter	1# Doubles	Michael Hess	Zsolt Juhasz / Joshua Luetkehans	4-6 6-4 1-0	17%	L
10/16/2021	4.5 Men	2# Doubles	Christian Lynn	Jake Minner / Mariusz Biernacki	6-2 6-2	86%	W
9/25/2021	4.5 Men	1# Doubles	Hans-Joerg Engler	Edwin Baldwin / Brad Smith	6-1 6-2	72%	W
9/19/2021	4.5 Men	1# Singles	—	Ryan Rymarzak	6-2 6-1	29%	L

Team History

Year	Flight	Team	Role
2026	CDTA 18 & Over M 4.5 Winter Active	CDTA W 18&OM4.5 6.Naper Schmidt Sat 2 $24
2026	CDTA E 18&O Men 4.5	CDTA E 18&OM4.5 6Naper Schmidt Sat 2 $24
2026	CDTA Mixed 18 & Over 9.0 Winter Active	CDTA W M18&O9.0 4.Wlmt Nakamura Sun 11 $20
2026	CDTA E Mixed 18&O 9.0	CDTA E M18&O9.0 1Cent Nakamura Sun 1 $20
2025	CDTA 18 & Over M 4.5 Winter	CDTA W 18&OM4.5 6.Naperville Schmidt Sat 2 $24
2025	CDTA Combo M 8.5 Summer	CDTA S ComboM8.5 2Naperville Podwika Sun 6 $24
2025	CDTA Combo Mix 8.5 Summer	CDTA S ComboX8.5 1Tam Wright Sat 5 $22
2025	CDTA Combo Mix 8.5 Fall	CDTA F ComboX8.5 1Tam Wright Sat 5 $22
2025	CDTA Mixed 18 & Over 8.0 Winter	CDTA W M18&OX8.0 2.Tam Wright Sat 7 $22
2025	Men High 4.0/4.5/5.0	CDTA S TriMHigh 1Tam Wright Fri 7 $22	Captain
2024	CDTA 18 & Over 8.0 Mixed Summer	CDTA S M18&OX8.0 2.Tam Wright Tue 7 $22
2024	CDTA 18 & Over 9.0 Mixed Summer	CDTA S M18&OX9.0 2.Centennial Wright Tue 7 $20
2024	CDTA 18 & Over 9.0 Mixed Winter	CDTA W M18&OX9.0 4.River Trails Wright Fri 7:30 $25
2024	CDTA E Mixed 18&O 9.0	CDTA E M18&OX9.0 1.River Trails Wright Fri 7:30 $24
2023	CDTA 18 & Over M 4.5 Winter	CDTA W 18&O 4.5M Naperville Schmidt Sat 4 $22
2022	CDTA ESL 18&O W/E 4.5 Men	CDTA E 18&O W/E 4.5M Naperville Schmidt Sat 4 $20