Statistical Analysis and Estimated Tennis Ratings to the 10,000th of a Point
Match History (2023) View Advanced Player Stats
Carol Zwirn (Round Rock, TX)
Female 		3.0 C
12/31/2024
Estimated Dynamic Rating 2.9612
12/12/2024
Projected Year End Rating ------
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3.0 Rating Meter
Rating Meter
2.5001 - 3.0000
Recent Match History Current Rating History
2023 Overall Season [Doubles]
League/Level Total
Matches		 Win Loss Tie WPct Total
Sets		 Win Loss WPct Total
Games		 Win Loss WPct Defaults
Adult 18+ 3.0 14 9 5 0 64.3 33 20 13 60.6 262 150 112 57.3 0
Adult 18+ 3.5 9 4 5 0 44.4 19 9 10 47.4 169 81 88 47.9 0
Adult 40+ 3.0 4 3 1 0 75.0 9 6 3 66.7 74 44 30 59.5 0
Adult 40+ 3.5 7 3 4 0 42.9 15 7 8 46.7 127 59 68 46.5 0
Total 34 19 15 0 55.9 76 42 34 55.3 632 334 298 52.8 0
Match Date League Team Court Partner Opponent(s) W/L Result Match Rating
11/02/2023 Adult 18+
3.5		 Not My Fault
Texas		 D1 Sue Ko
(3.22) 		Brannon Andrews
(3.37)
Julie Waidelich
(3.35) 		L 6-2
6-1		 2.89 2.97
10/31/2023 Adult 18+
3.0		 Slammers
Texas		 D3 Georgia Nolan
(-----) 		amy supak
(-----)
Jennifer Lopez
(-----) 		W 6-3
6-1		 NC NC
10/26/2023 Adult 18+
3.5		 Not My Fault
Texas		 D3 Courtney Fisher
(-----) 		Jennifer Egelsee
(-----)
Melissa Rabeaux
(-----) 		L 6-4
6-2		 NC NC
10/20/2023 Adult 18+
3.0		 Slammers
Texas		 D2 Jacqueline Valastro
(2.63) 		Tiffany Olguin
(2.29)
Melissa Johnson
(2.28) 		W 6-2
6-3		 2.81 2.95
10/12/2023 Adult 18+
3.5		 Not My Fault
Texas		 D1 Sue Ko
(3.21) 		Rhonda Alexander
(3.40)
Susan Harvin
(3.24) 		L 1-6
6-1
1-0		 3.18 3.01
10/03/2023 Adult 18+
3.5		 Not My Fault
Texas		 D2 Sue Ko
(3.14) 		Cathy Douglas
(3.12)
Megan Rothwell
(3.27) 		W 6-2
7-5		 3.25 3.01
09/29/2023 Adult 18+
3.0		 Slammers
Texas		 D2 Jodi Pruett
(2.68) 		Kathleen Orlando
(2.78)
Lee Iselt
(2.52) 		W 5-7
7-5
1-0		 2.82 2.90
09/18/2023 Adult 18+
3.0		 Slammers
Texas		 D2 Desiree Foster
(2.71) 		Tina Goldman
(2.64)
Lindsay Pallotta
(2.52) 		W 6-1
6-0		 3.11 2.96
08/25/2023 Adult 18+
3.0		 Slammers
Texas		 D2 Jacqueline Valastro
(2.68) 		Jeanna Crow
(2.86)
Susan Herb
(2.72) 		L 7-5
3-2		 2.81 2.91
08/11/2023 Adult 18+
3.0		 Slammers
Texas		 D2 Desiree Foster
(2.75) 		Becky Bell
(2.68)
Valerie Moderhack
(2.43) 		W 6-1
4-6
1-0		 2.76 2.90
08/10/2023 Adult 18+
3.5		 Not My Fault
Texas		 D3 Sylette Kitchen
(2.95) 		Deborah Pepper
(3.00)
Cherrie Park
(3.24) 		L 6-2
7-6		 2.99 2.93
08/03/2023 Adult 18+
3.5		 Not My Fault
Texas		 D3 Sylette Kitchen
(2.94) 		Carolina Dias
(3.16)
Sandra Simpson
(3.00) 		W 7-6
6-4		 3.12 2.95
07/28/2023 Adult 18+
3.0		 Slammers
Texas		 D1 Rhoda Wong
(2.72) 		Courtney Meinen
(2.73)
Jennifer Kelley
(2.58) 		W 4-6
7-6
1-0		 2.74 2.89
07/14/2023 Adult 18+
3.0		 Slammers
Texas		 D3 Rhoda Wong
(2.73) 		Rachel Schnee
(2.48)
Heather Hay
(2.43) 		W 6-2
6-4		 2.74 2.89
06/09/2023 Adult 18+
3.0		 Slammers
Texas		 D2 Jacqueline Valastro
(2.77) 		Dianne Chadroff
(2.65)
Carole Wilson
(2.31) 		W 6-3
3-2		 2.74 2.90
05/24/2023 Adult 18+
3.5		 Not My Fault
Texas		 D2 Sue Ko
(3.17) 		Kateisha Porta
(2.96)
Julie Williford
(3.02) 		W 6-4
6-2		 3.06 2.95
05/19/2023 Adult 18+
3.0		 Slammers
Texas		 D1 Ursula Wells
(2.92) 		Jen Gocek
(2.73)
Meg Warzecha
(2.55) 		W 7-5
6-0		 2.91 2.92
05/18/2023 Adult 18+
3.5		 Not My Fault
Texas		 D3 Sue Ko
(3.18) 		Kelly Fallis
(3.29)
Cherrie Park
(3.22) 		L 6-3
6-4		 2.97 2.93
05/12/2023 Adult 18+
3.0		 Slammers
Texas		 D1 Ursula Wells
(2.96) 		Adrian Lindeen
(2.96)
Julie Patterson
(2.56) 		L 3-6
6-4
1-0		 2.75 2.90
04/28/2023 Adult 18+
3.0		 Slammers
Texas		 D2 Patricia Lucero
(2.81) 		Kayla Potts
(3.11)
Cathy Riedel
(2.83) 		L 6-3
7-5		 2.90 2.93
04/21/2023 Adult 18+
3.0		 Slammers
Texas		 D1 Courtney Fisher
(2.98) 		Kate Massey
(2.75)
Teresa Lyons
(2.78) 		L 7-6
1-6
1-0		 2.81 2.93
04/14/2023 Adult 18+
3.0		 Slammers
Texas		 D2 Jodi Pruett
(2.73) 		Seema Parekh
(2.85)
Sandy Allen
(2.74) 		L 6-2
7-5		 2.74 2.92
04/13/2023 Adult 18+
3.5		 Not My Fault
Texas		 D3 Sue Ko
(3.12) 		Barbara Bronleewe
(2.89)
Melissa Hall
(2.97) 		W 6-4
6-4		 2.96 2.96
03/23/2023 Adult 40+
3.5		 Not My Fault
Texas		 D3 Sue Ko
(3.10) 		Susan Crabtree
(2.82)
Mildred Paul
(3.13) 		W 6-4
6-2		 3.09 2.98
03/11/2023 Adult 40+
3.5		 Pocket Aces
Texas		 D3 Vicki Love
(3.14) 		Megan Poore
(3.39)
Rhoda Wong
(2.83) 		L 7-6
6-3		 2.94 2.93
03/09/2023 Adult 40+
3.5		 Not My Fault
Texas		 D3 Sue Ko
(3.02) 		Maria Candil
(3.24)
Linda Schmitt
(2.95) 		W 6-2
6-3		 3.29 2.98
03/04/2023 Adult 40+
3.5		 Pocket Aces
Texas		 D3 Ursula Wells
(2.91) 		Ida Brazell
(3.27)
Crystal Murray
(3.21) 		L 6-2
6-7
1-0		 3.13 2.93
03/03/2023 Adult 40+
3.0		 Slammers
Texas		 D1 Courtney Fisher
(2.90) 		Jessica Green
(2.86)
Jodi Pruett
(2.82) 		W 6-4
6-4		 2.93 2.87
03/02/2023 Adult 40+
3.5		 Not My Fault
Texas		 D3 Sue Ko
(2.96) 		Julie Williford
(2.92)
Meghan Nielsen
(2.92) 		W 6-3
6-4		 3.01 2.88
02/24/2023 Adult 40+
3.0		 Slammers
Texas		 D1 Jana McCown
(2.59) 		Deborah Reed
(2.64)
Diane Thompson
(2.82) 		L 7-5
6-4		 2.76 2.84
02/16/2023 Adult 40+
3.5		 Not My Fault
Texas		 D1 Debbie Cox
(3.01) 		Maura Donelson
(3.10)
Dawn Laguens
(3.25) 		L 6-1
6-0		 2.66 2.84
01/20/2023 Adult 40+
3.0		 Slammers
Texas		 D1 Nickole Gann
(2.63) 		Kathleen Orlando
(2.68)
Lee Iselt
(2.36) 		W 4-6
6-2
1-0		 2.72 2.84
01/14/2023 Adult 40+
3.5		 Pocket Aces
Texas		 D2 Maria Yvette Rodriguez
(3.10) 		Ida Brazell
(3.23)
Tracy Read
(3.22) 		L 6-1
6-3		 2.84 2.86
01/13/2023 Adult 40+
3.0		 Slammers
Texas		 D2 Nickole Gann
(2.55) 		Ayse Clark
(2.51)
KK Mcintosh
(2.63) 		W 6-0
6-1		 3.14 2.92
11/02/2023 D1 Adult 18+
3.5
Not My Fault
Texas		 L Smartaces
Texas
Sue Ko (3.22) 6-2
6-1		 Brannon Andrews (3.37)
Julie Waidelich (3.35)
Match: 2.89 Rating: 2.97
10/31/2023 D3 Adult 18+
3.0
Slammers
Texas		 W Berry Slicey
Texas
Georgia Nolan (-----) 6-3
6-1		 amy supak (-----)
Jennifer Lopez (-----)
Match: NC Rating: NC
10/26/2023 D3 Adult 18+
3.5
Not My Fault
Texas		 L Netchix
Texas
Courtney Fisher (-----) 6-4
6-2		 Jennifer Egelsee (-----)
Melissa Rabeaux (-----)
Match: NC Rating: NC
10/20/2023 D2 Adult 18+
3.0
Slammers
Texas		 W GCC Smart Aces
Texas
Jacqueline Valastro (2.63) 6-2
6-3		 Tiffany Olguin (2.29)
Melissa Johnson (2.28)
Match: 2.81 Rating: 2.95
10/12/2023 D1 Adult 18+
3.5
Not My Fault
Texas		 L Berry Twisted 3.5 Weekday
Texas
Sue Ko (3.21) 1-6
6-1
1-0		 Rhonda Alexander (3.40)
Susan Harvin (3.24)
Match: 3.18 Rating: 3.01
10/03/2023 D2 Adult 18+
3.5
Not My Fault
Texas		 W Smartaces
Texas
Sue Ko (3.14) 6-2
7-5		 Cathy Douglas (3.12)
Megan Rothwell (3.27)
Match: 3.25 Rating: 3.01
09/29/2023 D2 Adult 18+
3.0
Slammers
Texas		 W Over Served
Texas
Jodi Pruett (2.68) 5-7
7-5
1-0		 Kathleen Orlando (2.78)
Lee Iselt (2.52)
Match: 2.82 Rating: 2.90
09/18/2023 D2 Adult 18+
3.0
Slammers
Texas		 W We Drop Shots
Texas
Desiree Foster (2.71) 6-1
6-0		 Tina Goldman (2.64)
Lindsay Pallotta (2.52)
Match: 3.11 Rating: 2.96
08/25/2023 D2 Adult 18+
3.0
Slammers
Texas		 L Drop Shots
Texas
Jacqueline Valastro (2.68) 7-5
3-2		 Jeanna Crow (2.86)
Susan Herb (2.72)
Match: 2.81 Rating: 2.91
08/11/2023 D2 Adult 18+
3.0
Slammers
Texas		 W Over Served
Texas
Desiree Foster (2.75) 6-1
4-6
1-0		 Becky Bell (2.68)
Valerie Moderhack (2.43)
Match: 2.76 Rating: 2.90
08/10/2023 D3 Adult 18+
3.5
Not My Fault
Texas		 L Sweet Shots 3.5
Texas
Sylette Kitchen (2.95) 6-2
7-6		 Deborah Pepper (3.00)
Cherrie Park (3.24)
Match: 2.99 Rating: 2.93
08/03/2023 D3 Adult 18+
3.5
Not My Fault
Texas		 W Tennis Dolls
Texas
Sylette Kitchen (2.94) 7-6
6-4		 Carolina Dias (3.16)
Sandra Simpson (3.00)
Match: 3.12 Rating: 2.95
07/28/2023 D1 Adult 18+
3.0
Slammers
Texas		 W Line Catchers
Texas
Rhoda Wong (2.72) 4-6
7-6
1-0		 Courtney Meinen (2.73)
Jennifer Kelley (2.58)
Match: 2.74 Rating: 2.89
07/14/2023 D3 Adult 18+
3.0
Slammers
Texas		 W Serve Us Another
Texas
Rhoda Wong (2.73) 6-2
6-4		 Rachel Schnee (2.48)
Heather Hay (2.43)
Match: 2.74 Rating: 2.89
06/09/2023 D2 Adult 18+
3.0
Slammers
Texas		 W Lakeside Smash
Texas
Jacqueline Valastro (2.77) 6-3
3-2		 Dianne Chadroff (2.65)
Carole Wilson (2.31)
Match: 2.74 Rating: 2.90
05/24/2023 D2 Adult 18+
3.5
Not My Fault
Texas		 W Great Gamers
Texas
Sue Ko (3.17) 6-4
6-2		 Kateisha Porta (2.96)
Julie Williford (3.02)
Match: 3.06 Rating: 2.95
05/19/2023 D1 Adult 18+
3.0
Slammers
Texas		 W Fireballs
Texas
Ursula Wells (2.92) 7-5
6-0		 Jen Gocek (2.73)
Meg Warzecha (2.55)
Match: 2.91 Rating: 2.92
05/18/2023 D3 Adult 18+
3.5
Not My Fault
Texas		 L Netchix
Texas
Sue Ko (3.18) 6-3
6-4		 Kelly Fallis (3.29)
Cherrie Park (3.22)
Match: 2.97 Rating: 2.93
05/12/2023 D1 Adult 18+
3.0
Slammers
Texas		 L Berry Slicey
Texas
Ursula Wells (2.96) 3-6
6-4
1-0		 Adrian Lindeen (2.96)
Julie Patterson (2.56)
Match: 2.75 Rating: 2.90
04/28/2023 D2 Adult 18+
3.0
Slammers
Texas		 L Serve Us Another
Texas
Patricia Lucero (2.81) 6-3
7-5		 Kayla Potts (3.11)
Cathy Riedel (2.83)
Match: 2.90 Rating: 2.93
04/21/2023 D1 Adult 18+
3.0
Slammers
Texas		 L Over Served
Texas
Courtney Fisher (2.98) 7-6
1-6
1-0		 Kate Massey (2.75)
Teresa Lyons (2.78)
Match: 2.81 Rating: 2.93
04/14/2023 D2 Adult 18+
3.0
Slammers
Texas		 L The Incrediballs
Texas
Jodi Pruett (2.73) 6-2
7-5		 Seema Parekh (2.85)
Sandy Allen (2.74)
Match: 2.74 Rating: 2.92
04/13/2023 D3 Adult 18+
3.5
Not My Fault
Texas		 W Sweet Shots 3.5
Texas
Sue Ko (3.12) 6-4
6-4		 Barbara Bronleewe (2.89)
Melissa Hall (2.97)
Match: 2.96 Rating: 2.96
03/23/2023 D3 Adult 40+
3.5
Not My Fault
Texas		 W Sweet Shots 3.5
Texas
Sue Ko (3.10) 6-4
6-2		 Susan Crabtree (2.82)
Mildred Paul (3.13)
Match: 3.09 Rating: 2.98
03/11/2023 D3 Adult 40+
3.5
Pocket Aces
Texas		 L Racq Pacq 3.5
Texas
Vicki Love (3.14) 7-6
6-3		 Megan Poore (3.39)
Rhoda Wong (2.83)
Match: 2.94 Rating: 2.93
03/09/2023 D3 Adult 40+
3.5
Not My Fault
Texas		 W Netchix
Texas
Sue Ko (3.02) 6-2
6-3		 Maria Candil (3.24)
Linda Schmitt (2.95)
Match: 3.29 Rating: 2.98
03/04/2023 D3 Adult 40+
3.5
Pocket Aces
Texas		 L Supreme Court 3.5
Texas
Ursula Wells (2.91) 6-2
6-7
1-0		 Ida Brazell (3.27)
Crystal Murray (3.21)
Match: 3.13 Rating: 2.93
03/03/2023 D1 Adult 40+
3.0
Slammers
Texas		 W Berry Slicey
Texas
Courtney Fisher (2.90) 6-4
6-4		 Jessica Green (2.86)
Jodi Pruett (2.82)
Match: 2.93 Rating: 2.87
03/02/2023 D3 Adult 40+
3.5
Not My Fault
Texas		 W Great Gamers
Texas
Sue Ko (2.96) 6-3
6-4		 Julie Williford (2.92)
Meghan Nielsen (2.92)
Match: 3.01 Rating: 2.88
02/24/2023 D1 Adult 40+
3.0
Slammers
Texas		 L Lakeside Smash
Texas
Jana McCown (2.59) 7-5
6-4		 Deborah Reed (2.64)
Diane Thompson (2.82)
Match: 2.76 Rating: 2.84
02/16/2023 D1 Adult 40+
3.5
Not My Fault
Texas		 L ChardonnACE
Texas
Debbie Cox (3.01) 6-1
6-0		 Maura Donelson (3.10)
Dawn Laguens (3.25)
Match: 2.66 Rating: 2.84
01/20/2023 D1 Adult 40+
3.0
Slammers
Texas		 W Over Served 3.0 (GCC)
Texas
Nickole Gann (2.63) 4-6
6-2
1-0		 Kathleen Orlando (2.68)
Lee Iselt (2.36)
Match: 2.72 Rating: 2.84
01/14/2023 D2 Adult 40+
3.5
Pocket Aces
Texas		 L Supreme Court 3.5
Texas
Maria Yvette Rodriguez (3.10) 6-1
6-3		 Ida Brazell (3.23)
Tracy Read (3.22)
Match: 2.84 Rating: 2.86
01/13/2023 D2 Adult 40+
3.0
Slammers
Texas		 W GCC Smart Aces
Texas
Nickole Gann (2.55) 6-0
6-1		 Ayse Clark (2.51)
KK Mcintosh (2.63)
Match: 3.14 Rating: 2.92
Glossary
Match Player rating for individual match.
Rating Dynamic rating after completed match.
NC Match not yet calculated into rating.
S Self rated or unrated player involved in match so no match rating calculated for current player.
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