Koshizawa, Saburo

USTA ID
2019880660
Gender
Male
Location
Hoffman Estates, IL
WTN ID
KOS6040506

TennisLink · USTA · WTN

Active Flights

M 4.0 Winter
FV (Takahashi)
Mixed 8.0 Winter
CPE (Sitar)
40 & Over M 4.0 Winter
RT (Takahashi)

NTRP Ratings

RatingTypeYearDateExpires
4.0 C 2025 Dec. 31, 2025 Dec. 31, 2028

WTN Ratings

Doubles
24.60
Confidence 100 · 22.9–26.3

Position Distribution

Men's Combo 4.0
15 matches
1# Doubles
9 (60%)
2# Doubles
5 (33%)
3# Doubles
1 (7%)
Mixed Doubles 7.0
2 matches
2# Doubles
2 (100%)
Mixed Doubles 8.0
5 matches
2# Doubles
3 (60%)
3# Doubles
2 (40%)

Partners

PartnerWLxWTogether
YOSHITAKA KUMAGAI 3 1 1.4 4
Masaki Nozawa 4 0 2.1 4
Sho Mizokawa 2 0 1.4 2
Haina Shin 1 1 0.9 2
Yoshitaka Nakahara 0 2 0.7 2
Tomohiro Hori 1 0 0.9 1
Sotiria Tryfonopoulos 1 0 0.2 1
Ana Chang 1 0 0.6 1
Hideaki Takahashi 1 0 0.5 1
Yuko Haggerty 1 0 0.7 1
Kyoko Tachibana 0 1 0.5 1
Yuki Iwanari 0 1 0.3 1
Mika Nomura 1 0 0.4 1

Opponents

OpponentWLxWFaced
Randy Orr 2 1 0.8 3
David Isphording 1 1 0.7 2
Rafael Lozada 1 0 0.8 1
Marco Deutsch 1 0 0.8 1
Simon Abraham 0 1 0.2 1
Ionut Rus 0 1 0.2 1
Jason Hui 1 0 0.4 1
Sathish Ponneboina 1 0 0.9 1
Akash Shah 1 0 0.9 1
Charles Phelps 0 1 0.3 1
Mira Struck 0 1 0.3 1
Patrick Seermon 0 1 0.6 1
Noah Baker 0 1 0.6 1
Steve Yoon 1 0 0.9 1
Timothy Schmeltz 1 0 0.9 1
Taya Zoubareva 1 0 0.2 1
Rick Spurgeon 1 0 0.2 1
Bill Bowman 1 0 0.6 1
Yuri Tam 1 0 0.6 1
Steve Napolitano 1 0 0.7 1
Ann Park 1 0 0.7 1
Reid Bertsche 1 0 0.5 1
Kelly Castriotta 1 0 0.6 1
Carlos Garcia 1 0 0.6 1
Douglas Kelley 1 0 0.4 1
Steve Fuchs 1 0 0.7 1
Konstantin Gulyayev 1 0 0.7 1
Michael Broderick 1 0 0.4 1
Daniel Mendoza 1 0 0.4 1
John Leubner 0 1 0.1 1
Carolyn Humpherson 0 1 0.5 1
James Humpherson 0 1 0.5 1
Zack Issleib 0 1 0.3 1
Justin Booms 1 0 0.3 1
Richard Hutchins 1 0 0.3 1
Jazz Burks 1 0 0.4 1
Tara Borre 1 0 0.4 1

Match History (22)

DateFlightPosPartnerOpponent(s)ScoreP(win)Result
4/25/2026 40 & Over M 4.0 Winter 1# Doubles Sho Mizokawa Rafael Lozada / Marco Deutsch 6-3 7-6 77% W
4/18/2026 M 4.0 Winter 1# Doubles YOSHITAKA KUMAGAI Simon Abraham / Ionut Rus 7-6 2-4 1-0 21% L
4/11/2026 M 4.0 Winter 2# Doubles YOSHITAKA KUMAGAI Jason Hui / Randy Orr 7-5 6-2 37% W
3/21/2026 M 4.0 Winter 2# Doubles Tomohiro Hori Sathish Ponneboina / Akash Shah 6-0 6-0 88% W
3/20/2026 Mixed 8.0 Winter 2# Doubles Haina Shin Charles Phelps / Mira Struck 4-6 6-4 1-0 32% L
3/8/2026 40 & Over M 4.0 Winter 1# Doubles Yoshitaka Nakahara Patrick Seermon / Noah Baker 6-4 6-4 58% L
3/1/2026 40 & Over M 4.0 Winter 1# Doubles Masaki Nozawa Steve Yoon / Timothy Schmeltz 6-0 6-2 90% W
2/21/2026 Mixed 8.0 Winter 2# Doubles Sotiria Tryfonopoulos Taya Zoubareva / Rick Spurgeon 6-3 7-5 23% W
2/15/2026 Mixed 8.0 Winter 3# Doubles Ana Chang Bill Bowman / Yuri Tam 6-2 6-4 60% W
2/14/2026 M 4.0 Winter 1# Doubles Hideaki Takahashi 6-0 6-0 W
2/1/2026 Mixed 8.0 Winter 2# Doubles Yuko Haggerty Steve Napolitano / Ann Park 6-3 4-1 71% W
1/18/2026 M 4.0 Winter 1# Doubles Masaki Nozawa Reid Bertsche / David Isphording 6-2 5-7 1-0 46% W
1/16/2026 Mixed 8.0 Winter 3# Doubles Haina Shin Kelly Castriotta / Carlos Garcia 6-1 6-3 61% W
12/6/2025 Men 4.0 1# Doubles Masaki Nozawa Randy Orr / Douglas Kelley 6-4 6-4 35% W
11/22/2025 Men 4.0 2# Doubles YOSHITAKA KUMAGAI 6-0 6-0 W
11/15/2025 Men 4.0 2# Doubles Sho Mizokawa Steve Fuchs / Konstantin Gulyayev 6-0 6-1 66% W
10/11/2025 Men 4.0 2# Doubles Masaki Nozawa Michael Broderick / Daniel Mendoza 7-6 5-6 1-0 35% W
7/19/2025 M 4.0 Summer 1# Doubles Yoshitaka Nakahara John Leubner / Randy Orr 6-4 6-3 12% L
7/17/2025 40 & Over 7.0 Mixed Summer 2# Doubles Kyoko Tachibana Carolyn Humpherson / James Humpherson 6-2 6-4 50% L
7/12/2025 M 4.0 Summer 1# Doubles Yuki Iwanari David Isphording / Zack Issleib 7-6 6-2 26% L
6/27/2025 M 4.0 Summer 3# Doubles YOSHITAKA KUMAGAI Justin Booms / Richard Hutchins 6-3 6-3 28% W
6/1/2025 40 & Over 7.0 Mixed Summer 2# Doubles Mika Nomura Jazz Burks / Tara Borre 6-4 4-6 1-0 43% W

Team History

YearFlightTeamRole
2026 CDTA 18 & Over M 4.0 Winter Active CDTA W 18&OM4.0 7.FV Takahashi Sat 2 $25
2026 CDTA E 18&O Men 4.0 CDTA E 18&OM4.0 7FV Takahashi Sat 4 $25
2026 CDTA Mixed 18 & Over 8.0 Winter Active CDTA W M18&O8.0 6.CPE Sitar Fri 7:30 $28
2026 CDTA 40 & Over M 4.0 Winter Active CDTA W 40&OM4.0 6.RT Takahashi Sun 7 $27
2025 CDTA 18 & Over M 4.0 Summer CDTA S A18M4.0 2Forest View Takahashi Sat 11 $23
2025 CDTA 40 & Over 7.0 Mixed Summer CDTA S M407.0 5Forest View Dahlquist Sun 9 $23