Statistical Analysis and Estimated Tennis Ratings to the 10,000th of a Point
Match History (2021) View Advanced Player Stats
Donna Sommerfeldt (Saint Paul, MN)
Female 		4.0 C
12/31/2023
Estimated Dynamic Rating 3.6602
7/14/2024
Projected Year End Rating ------
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4.0 Rating Meter
Rating Meter
3.5001 - 4.0000
Recent Match History Current Rating History
2021 Overall Rating Season [Doubles]
League/Level Total
Matches		 Win Loss Tie WPct Total
Sets		 Win Loss WPct Total
Games		 Win Loss WPct Defaults
Adult 18+ 3.5 4 4 0 0 100.0 9 8 1 88.9 66 47 19 71.2 0
Adult 18+ 4.0 2 0 2 0 0.0 5 1 4 20.0 45 20 25 44.4 0
Adult 40+ 3.5 9 8 1 0 88.9 18 16 2 88.9 151 103 48 68.2 0
Adult 40+ 4.0 8 1 7 0 12.5 18 3 15 16.7 142 51 91 35.9 0
Total 23 13 10 0 56.5 50 28 22 56.0 404 221 183 54.7 0
Match Date League Team Court Partner Opponent(s) W/L Result Match Rating
10/25/2021 Adult 18+
3.5		 Gilchrist- WBL- 3.5 ES +18
Northern		 D1 Chanda Cook
(3.44) 		Maddy Persuitti
(2.88)
Cassie Benowitz
(3.08) 		W 6-3
3-6
1-0		 3.03 3.35
10/16/2021 Adult 40+
3.5
Nationals		 Gilchrist- 2021-ES
Northern		 D2 Chanda Cook
(3.40) 		anna feitelson
(3.28)
deborah riggs
(3.29) 		W 6-4
6-2		 3.49 3.47
10/15/2021 Adult 40+
3.5
Nationals		 Gilchrist- 2021-ES
Northern		 D1 Chanda Cook
(3.43) 		Eileen Savko
(3.50)
Jennifer Kane
(3.39) 		L 6-3
6-4		 3.31 3.43
10/04/2021 Adult 18+
3.5		 Gilchrist- WBL- 3.5 ES +18
Northern		 D1 Chanda Cook
(3.43) 		Hung Lam
(3.17)
Sara Venjohn
(-----) 		W 6-0
6-1		 S 3.46
08/22/2021 Adult 40+
3.5
Sectionals		 Gilchrist- 2021-ES
Northern		 D2 Chanda Cook
(3.46) 		Marijo Peterson
(3.27)
Jodi DePree
(3.13) 		W 6-1
6-4		 3.45 3.46
08/21/2021 Adult 40+
3.5
Sectionals		 Gilchrist- 2021-ES
Northern		 D1 Chanda Cook
(3.43) 		Jamie Parrish
(3.28)
Donnette Tanner
(3.29) 		W 6-1
6-1		 3.68 3.49
08/21/2021 Adult 40+
3.5
Sectionals		 Gilchrist- 2021-ES
Northern		 D1 Chanda Cook
(3.41) 		Antje Schreurs
(3.32)
Teresa McDermott
(3.33) 		W 6-2
6-2		 3.63 3.45
08/20/2021 Adult 40+
3.5
Sectionals		 Gilchrist- 2021-ES
Northern		 D1 Chanda Cook
(3.35) 		Molly Dymit
(3.06)
Shannon Overdahl
(3.30) 		W 6-1
6-2		 3.53 3.43
07/27/2021 Adult 18+
3.5		 Gilchrist- WBL-3.5-SUMMER2021
Northern		 D1 Shannon Quinn
(3.13) 		Linda Bieza
(3.03)
Susan Bohlke
(2.91) 		W 6-3
6-1		 3.38 3.39
06/29/2021 Adult 18+
3.5		 Gilchrist- WBL-3.5-SUMMER2021
Northern		 D1 Chanda Cook
(3.48) 		Nancy Koch
(3.27)
Beth Nesheim
(3.01) 		W 7-5
6-0		 3.35 3.38
06/14/2021 Adult 18+
4.0		 Gilchrist- WBL-4.0SummerDay
Northern		 D1 Chanda Cook
(3.34) 		Christeen Paulison
(3.47)
Katie Hammond
(3.53) 		L 7-5
4-6
1-0		 3.50 3.41
05/03/2021 Adult 18+
4.0		 Gilchrist- WBL-4.0SummerDay
Northern		 D2 Chanda Cook
(3.36) 		Carmen Callies
(3.59)
Tara Frimat
(3.64) 		L 6-3
7-6		 3.51 3.42
04/15/2021 Adult 40+
4.0		 Gilchrist- WBL - Winter 4.0
Northern		 D1 Amy Senkowski
(3.54) 		Kerry Reiling
(3.68)
Lynda Stout
(3.93) 		L 6-2
6-4		 3.56 3.42
04/01/2021 Adult 40+
4.0		 Gilchrist- WBL - Winter 4.0
Northern		 D1 Chanda Cook
(3.32) 		Susan Huff
(3.72)
Megan Murray-Bennett
(3.77) 		L 6-4
6-4		 3.65 3.43
03/04/2021 Adult 40+
4.0		 Gilchrist- WBL - Winter 4.0
Northern		 D2 Chanda Cook
(3.32) 		Cathy Paper
(3.58)
Jennie Kawaters
(3.83) 		L 6-1
6-2		 3.39 3.35
02/18/2021 Adult 40+
4.0		 Gilchrist- WBL - Winter 4.0
Northern		 D1 Chanda Cook
(3.31) 		Katie Pargal
(3.70)
Lana Pinnock
(3.60) 		L 6-1
6-4		 3.42 3.36
11/19/2020 Adult 40+
4.0		 Gilchrist- ES 2021 4.0 WBL
Northern		 D2 Chanda Cook
(3.33) 		Jodie Tasto
(3.72)
Susan Gherity
(3.67) 		L 6-2
6-1		 3.36 3.33
11/11/2020 Adult 40+
3.5		 Gilchrist- 2021-ES
Northern		 D2 Shannon Quinn
(3.25) 		Linda Bieza
(2.95)
Teri Heltne
(2.89) 		W 6-3
6-2		 3.24 3.32
11/05/2020 Adult 40+
4.0		 Gilchrist- ES 2021 4.0 WBL
Northern		 D3 Chanda Cook
(3.24) 		Suzanne Harman
(3.42)
Zeny McCoy
(3.59) 		W 2-6
6-4
1-0		 3.48 3.39
10/22/2020 Adult 40+
4.0		 Gilchrist- ES 2021 4.0 WBL
Northern		 D2 Chanda Cook
(3.30) 		Sara Hong
(3.41)
Karla Toleu
(3.68) 		L 6-4
7-5		 3.48 3.42
10/15/2020 Adult 40+
4.0		 Gilchrist- ES 2021 4.0 WBL
Northern		 D2 Chanda Cook
(3.18) 		Donna Jensen
(3.85)
Susan Gherity
(3.62) 		L 6-2
1-6
1-0		 3.83 3.48
12/18/2019 Adult 40+
3.5		 Gilchrist-ES 2020
Northern		 D1 Amy Lorentz
(3.47) 		Annette Ellson
(3.15)
Janet Hansen
(3.09) 		W 6-2
6-4		 3.28 3.37
12/04/2019 Adult 40+
3.5		 Gilchrist-ES 2020
Northern		 D2 Chanda Cook
(3.17) 		Susan Bohlke
(3.06)
Laurie Ehle
(3.08) 		W 6-4
6-1		 3.42 3.40
10/25/2021 D1 Adult 18+
3.5
Gilchrist- WBL- 3.5 ES +18
Northern		 W Sundick- ORCC Women
Northern
Chanda Cook (3.44) 6-3
3-6
1-0		 Maddy Persuitti (2.88)
Cassie Benowitz (3.08)
Match: 3.03 Rating: 3.35
10/16/2021 D2 Adult 40+
3.5
Nationals
Gilchrist- 2021-ES
Northern		 W KY/LOU/MEADOWS
Southern
Chanda Cook (3.40) 6-4
6-2		 anna feitelson (3.28)
deborah riggs (3.29)
Match: 3.49 Rating: 3.47
10/15/2021 D1 Adult 40+
3.5
Nationals
Gilchrist- 2021-ES
Northern		 L NJ: All Balled Up
Eastern
Chanda Cook (3.43) 6-3
6-4		 Eileen Savko (3.50)
Jennifer Kane (3.39)
Match: 3.31 Rating: 3.43
10/04/2021 D1 Adult 18+
3.5
Gilchrist- WBL- 3.5 ES +18
Northern		 W Kamish/Ehle
Northern
Chanda Cook (3.43) 6-0
6-1		 Hung Lam (3.17)
Sara Venjohn (-----)
Match: S Rating: 3.46
08/22/2021 D2 Adult 40+
3.5
Sectionals
Gilchrist- 2021-ES
Northern		 W Summers Fargo
Northern
Chanda Cook (3.46) 6-1
6-4		 Marijo Peterson (3.27)
Jodi DePree (3.13)
Match: 3.45 Rating: 3.46
08/21/2021 D1 Adult 40+
3.5
Sectionals
Gilchrist- 2021-ES
Northern		 W Dobbins/Eliason-Matchmakers
Northern
Chanda Cook (3.43) 6-1
6-1		 Jamie Parrish (3.28)
Donnette Tanner (3.29)
Match: 3.68 Rating: 3.49
08/21/2021 D1 Adult 40+
3.5
Sectionals
Gilchrist- 2021-ES
Northern		 W Ronning Sioux Falls
Northern
Chanda Cook (3.41) 6-2
6-2		 Antje Schreurs (3.32)
Teresa McDermott (3.33)
Match: 3.63 Rating: 3.45
08/20/2021 D1 Adult 40+
3.5
Sectionals
Gilchrist- 2021-ES
Northern		 W Thies
Northern
Chanda Cook (3.35) 6-1
6-2		 Molly Dymit (3.06)
Shannon Overdahl (3.30)
Match: 3.53 Rating: 3.43
07/27/2021 D1 Adult 18+
3.5
Gilchrist- WBL-3.5-SUMMER2021
Northern		 W Ehle/Wenck
Northern
Shannon Quinn (3.13) 6-3
6-1		 Linda Bieza (3.03)
Susan Bohlke (2.91)
Match: 3.38 Rating: 3.39
06/29/2021 D1 Adult 18+
3.5
Gilchrist- WBL-3.5-SUMMER2021
Northern		 W Koch-Williston Westside Slammers 2021
Northern
Chanda Cook (3.48) 7-5
6-0		 Nancy Koch (3.27)
Beth Nesheim (3.01)
Match: 3.35 Rating: 3.38
06/14/2021 D1 Adult 18+
4.0
Gilchrist- WBL-4.0SummerDay
Northern		 L Wolson / Stelter - Served Not Shaken
Northern
Chanda Cook (3.34) 7-5
4-6
1-0		 Christeen Paulison (3.47)
Katie Hammond (3.53)
Match: 3.50 Rating: 3.41
05/03/2021 D2 Adult 18+
4.0
Gilchrist- WBL-4.0SummerDay
Northern		 L Callies/Frimat
Northern
Chanda Cook (3.36) 6-3
7-6		 Carmen Callies (3.59)
Tara Frimat (3.64)
Match: 3.51 Rating: 3.42
04/15/2021 D1 Adult 40+
4.0
Gilchrist- WBL - Winter 4.0
Northern		 L REILING-STOUT 40+ WINTER
Northern
Amy Senkowski (3.54) 6-2
6-4		 Kerry Reiling (3.68)
Lynda Stout (3.93)
Match: 3.56 Rating: 3.42
04/01/2021 D1 Adult 40+
4.0
Gilchrist- WBL - Winter 4.0
Northern		 L Toleu
Northern
Chanda Cook (3.32) 6-4
6-4		 Susan Huff (3.72)
Megan Murray-Bennett (3.77)
Match: 3.65 Rating: 3.43
03/04/2021 D2 Adult 40+
4.0
Gilchrist- WBL - Winter 4.0
Northern		 L REILING-STOUT 40+ WINTER
Northern
Chanda Cook (3.32) 6-1
6-2		 Cathy Paper (3.58)
Jennie Kawaters (3.83)
Match: 3.39 Rating: 3.35
02/18/2021 D1 Adult 40+
4.0
Gilchrist- WBL - Winter 4.0
Northern		 L Toleu
Northern
Chanda Cook (3.31) 6-1
6-4		 Katie Pargal (3.70)
Lana Pinnock (3.60)
Match: 3.42 Rating: 3.36
11/19/2020 D2 Adult 40+
4.0
Gilchrist- ES 2021 4.0 WBL
Northern		 L Jensen
Northern
Chanda Cook (3.33) 6-2
6-1		 Jodie Tasto (3.72)
Susan Gherity (3.67)
Match: 3.36 Rating: 3.33
11/11/2020 D2 Adult 40+
3.5
Gilchrist- 2021-ES
Northern		 W Brady/Hoffer/Ehle
Northern
Shannon Quinn (3.25) 6-3
6-2		 Linda Bieza (2.95)
Teri Heltne (2.89)
Match: 3.24 Rating: 3.32
11/05/2020 D3 Adult 40+
4.0
Gilchrist- ES 2021 4.0 WBL
Northern		 W HarMar
Northern
Chanda Cook (3.24) 2-6
6-4
1-0		 Suzanne Harman (3.42)
Zeny McCoy (3.59)
Match: 3.48 Rating: 3.39
10/22/2020 D2 Adult 40+
4.0
Gilchrist- ES 2021 4.0 WBL
Northern		 L Huff/Toleu
Northern
Chanda Cook (3.30) 6-4
7-5		 Sara Hong (3.41)
Karla Toleu (3.68)
Match: 3.48 Rating: 3.42
10/15/2020 D2 Adult 40+
4.0
Gilchrist- ES 2021 4.0 WBL
Northern		 L Jensen
Northern
Chanda Cook (3.18) 6-2
1-6
1-0		 Donna Jensen (3.85)
Susan Gherity (3.62)
Match: 3.83 Rating: 3.48
12/18/2019 D1 Adult 40+
3.5
Gilchrist-ES 2020
Northern		 W Landrus - Fall
Northern
Amy Lorentz (3.47) 6-2
6-4		 Annette Ellson (3.15)
Janet Hansen (3.09)
Match: 3.28 Rating: 3.37
12/04/2019 D2 Adult 40+
3.5
Gilchrist-ES 2020
Northern		 W Kamish
Northern
Chanda Cook (3.17) 6-4
6-1		 Susan Bohlke (3.06)
Laurie Ehle (3.08)
Match: 3.42 Rating: 3.40
Glossary
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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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