Statistical Analysis and Estimated Tennis Ratings to the 10,000th of a Point
Match History (2018) View Advanced Player Stats
Petra Koehn (Minneapolis, MN)
Female 		3.5 C
12/31/2023
Estimated Dynamic Rating 3.0407
6/14/2024
Projected Year End Rating ------
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3.5 Rating Meter
Rating Meter
3.0001 - 3.5000
Recent Match History Current Rating History
2018 Overall Season
League/Level Total
Matches		 Win Loss Tie WPct Total
Sets		 Win Loss WPct Total
Games		 Win Loss WPct Defaults
Adult 18+ 3.5 6 6 0 0 100.0 12 12 0 100.0 103 74 29 71.8 0
Adult 40+ 3.5 11 9 2 0 81.8 27 18 9 66.7 193 106 87 54.9 0
Adult Other 3.5 18 10 8 0 55.6 39 21 18 53.8 314 166 148 52.9 0
Mixed 18+ 7.0 3 1 2 0 33.3 6 2 4 33.3 55 25 30 45.5 0
Total 38 26 12 0 68.4 84 53 31 63.1 665 371 294 55.8 0
Match Date League Team Court Partner Opponent(s) W/L Result Match Rating
12/13/2018 Adult Other
3.5		 MTC Swanson 9:30
Northern		 D2 Heather Flies
(3.29) 		Kristin Von Seggern
(3.25)
Joan Steingas
(3.19) 		W 6-2
6-3		 3.42 3.25
12/12/2018 Adult 40+
3.5		 Murnane - Game Day
Northern		 D2 Claudia Clark
(3.20) 		Lori Anne Emlong
(3.11)
Lauri Garvey
(3.01) 		W 6-3
6-3		 3.26 3.21
11/30/2018 Adult Other
3.5
Sectionals		 Murnane-High Strung
Northern		 D1 Claudia Clark
(3.19) 		Theresa Carlson
(3.58)
Michele Weddle
(3.21) 		L 6-4
6-2		 3.19 3.21
11/28/2018 Adult 40+
3.5		 Murnane - Game Day
Northern		 D3 Christine Homsey
(3.20) 		Laurie Ehle
(2.99)
Becky Beck
(3.10) 		W 2-6
7-5
1-0		 3.01 3.17
11/08/2018 Adult Other
3.5		 MTC Swanson 9:30
Northern		 D1 Lori Johnson
(3.10) 		Jacqueline Kirk
(3.07)
Sonali Meyer
(3.33) 		L 6-0
6-1		 2.86 3.19
11/07/2018 Adult 40+
3.5		 Murnane - Game Day
Northern		 D2 Claudia Clark
(3.24) 		Heather Landrus
(2.99)
Kathy Burns
(3.12) 		W 6-3
3-6
1-0		 3.14 3.29
10/25/2018 Adult Other
3.5		 MTC Swanson 9:30
Northern		 D2 Lori Johnson
(3.03) 		Susan Dando
(3.00)
Tracey Eichten
(3.10) 		W 6-3
6-2		 3.48 3.41
10/24/2018 Adult 40+
3.5		 Murnane - Game Day
Northern		 D2 Claudia Clark
(3.26) 		Jane Davidson
(3.07)
Marilyn Kelley
(3.06) 		W 6-2
6-0		 3.51 3.40
10/17/2018 Adult 40+
3.5		 Murnane - Game Day
Northern		 D3 Megan Ecker
(3.26) 		Michele Weddle
(3.23)
Karen Williams
(3.27) 		W 6-4
6-2		 3.51 3.38
10/11/2018 Adult Other
3.5		 MTC Swanson 9:30
Northern		 D2 Lori Johnson
(2.95) 		Tracy Robinson
(3.24)
Jennifer Bastian
(3.00) 		W 6-2
6-2		 3.59 3.40
10/10/2018 Adult 40+
3.5		 Murnane - Game Day
Northern		 D3 Claudia Clark
(3.23) 		Fran Zisman
(3.34)
Jacqueline Kirk
(3.06) 		W 6-4
2-6
1-0		 3.20 3.30
09/27/2018 Adult Other
3.5		 MTC Swanson 9:30
Northern		 D2 Lori Johnson
(3.04) 		Laurie Ehle
(3.01)
Theresa Trollen
(3.32) 		L 6-4
6-1		 3.09 3.31
09/20/2018 Adult Other
3.5		 MTC Swanson 9:30
Northern		 D2 Lori Johnson
(3.05) 		Candace Jensen
(3.12)
Cindi Andren
(3.13) 		W 7-5
6-2		 3.43 3.38
09/18/2018 Adult Other
3.5		 Murnane-High Strung
Northern		 D1 Claudia Clark
(3.36) 		stacey douville
(3.33)
Lori Johnson
(2.94) 		L 6-2
7-6		 3.04 3.32
08/28/2018 Adult Other
3.5		 Murnane-High Strung
Northern		 D1 Claudia Clark
(3.31) 		Stephanie Harlan
(3.18)
Lori Johnson
(3.00) 		W 6-1
6-1		 3.50 3.43
08/24/2018 Adult 40+
3.5
Sectionals		 Murnane - All Day
Northern		 D2 Claudia Clark
(3.37) 		Christine Leach
(3.46)
Andria Galvin
(3.26) 		L 6-3
6-2		 3.15 3.36
08/23/2018 Adult Other
3.5		 Murnane-High Strung
Northern		 D1 Claudia Clark
(3.38) 		Katie Rodriguez
(3.48)
meaghan mclaughlin
(3.41) 		W 6-3
2-6
1-0		 3.48 3.44
07/17/2018 Adult 18+
3.5		 Storlie - WCC
Northern		 D2 Claudia Clark
(3.35) 		Katie Rodriguez
(3.54)
Stacy Foerster
(3.36) 		W 7-6
7-6		 3.52 3.44
07/10/2018 Adult 18+
3.5		 Storlie - WCC
Northern		 D1 Kara Dillon
(3.25) 		Jody Aafedt
(2.95)
Samantha Hauser-Johnson
(3.20) 		W 6-2
6-2		 3.45 3.40
07/08/2018 Mixed 18+
7.0		 Clark WCC
Northern		 D3 Paul Koehn
(2.68) 		Mary Sams
(3.01)
Doug Sams
(2.37) 		W 6-1
6-4		 3.33 3.33
06/25/2018 Adult 18+
3.5		 Storlie - WCC
Northern		 D1 Claudia Clark
(3.33) 		Penelope Prescott
(3.05)
Suzanne Vanacora
(3.30) 		W 6-0
6-2		 3.61 3.42
06/08/2018 Mixed 18+
7.0		 Clark WCC
Northern		 D3 Paul Koehn
(2.80) 		Norman Abramson
(2.31)
Lynda Stelter
(3.46) 		L 6-2
6-3		 2.94 3.33
05/22/2018 Adult 18+
3.5		 Storlie - WCC
Northern		 D1 Claudia Clark
(3.25) 		Leslye Emptage
(3.33)
jane pirtle
(3.26) 		W 6-1
6-1		 3.71 3.43
05/15/2018 Adult 18+
3.5		 Storlie - WCC
Northern		 D2 Claudia Clark
(3.27) 		Laurie Ehle
(2.99)
Linda Bieza
(3.27) 		W 6-3
6-4		 3.30 3.32
05/08/2018 Adult 18+
3.5		 Storlie - WCC
Northern		 D2 Mary Sams
(3.13) 		Rhonda Mol
(2.64)
Marie Rudd
(2.77) 		W 6-0
6-2		 3.36 3.32
05/04/2018 Mixed 18+
7.0		 Clark WCC
Northern		 D3 Paul Koehn
(2.78) 		Sandi Erickson
(3.38)
Cory Zupfer
(3.10) 		L 6-2
7-6		 3.39 3.39
04/24/2018 Adult Other
3.5		 Murnane/Olig
Northern		 D1 Claudia Clark
(3.23) 		Lily Lockwood
(3.29)
Penelope Prescott
(3.12) 		W 6-1
6-3		 3.53 3.36
04/19/2018 Adult Other
3.5
Flight		 MTC Swanson 9:30am
Northern		 D2 Lori Johnson
(3.00) 		Sarah LeDoux
(3.20)
Denise Griep
(2.94) 		L 6-4
7-6		 3.15 3.28
04/17/2018 Adult Other
3.5		 Murnane/Olig
Northern		 D1 Elizabeth Olig
(3.21) 		Lana Pinnock
(3.41)
Rebecca Leland
(3.32) 		L 6-4
6-2		 3.22 3.30
04/12/2018 Adult Other
3.5
Flight		 MTC Swanson 9:30am
Northern		 D2 Lori Johnson
(3.02) 		Penelope Prescott
(3.09)
IRENE DE LA CRUZ
(2.96) 		L 6-4
0-6
1-0		 3.29 3.31
02/22/2018 Adult Other
3.5		 MTC Swanson 9:30am
Northern		 D2 Lori Johnson
(3.06) 		YI-WEN YANG
(3.34)
Hung Lam
(3.17) 		W 3-6
6-1
1-0		 3.46 3.37
02/14/2018 Adult 40+
3.5		 Murnane - All Day
Northern		 D2 Podaly Jay
(3.27) 		Cathy Paper
(3.38)
Nancy Paulson
(3.22) 		L 6-2
6-3		 3.07 3.30
02/08/2018 Adult Other
3.5		 MTC Swanson 9:30am
Northern		 D2 Lori Johnson
(3.04) 		Chris Ablack
(3.20)
Deborah Zilverberg
(3.00) 		L 6-1
6-2		 2.94 3.30
01/31/2018 Adult 40+
3.5		 Murnane - All Day
Northern		 D2 Carolyn Murnane
(3.42) 		Catherine Carney
(3.23)
Susan Stombaugh
(3.21) 		W 2-6
6-1
1-0		 3.29 3.40
01/25/2018 Adult Other
3.5		 MTC Swanson 9:30am
Northern		 D2 Lori Johnson
(2.99) 		Marcy Chamberlain
(3.19)
Loryn Follrath
(3.11) 		W 6-4
7-6		 3.44 3.43
01/18/2018 Adult Other
3.5		 MTC Swanson 9:30am
Northern		 D2 Heather Flies
(3.47) 		Mary Kalish-Johnson
(2.58)
Megan Tucci
(3.06) 		W 6-1
6-1		 3.43 3.43
01/17/2018 Adult 40+
3.5		 Murnane - All Day
Northern		 D2 Claudia Clark
(3.20) 		Carlene Forsythe
(3.24)
Amy Greenlay
(3.18) 		W 6-0
3-6
1-0		 3.46 3.43
01/10/2018 Adult 40+
3.5		 Murnane - All Day
Northern		 D3 Claudia Clark
(3.18) 		mara rozenburgs
(3.12)
Ting-Ting Zhu
(3.09) 		W 6-3
6-3		 3.44 3.42
12/13/2018 D2 Adult Other
3.5
MTC Swanson 9:30
Northern		 W MTC Britzius 9:30
Northern
Heather Flies (3.29) 6-2
6-3		 Kristin Von Seggern (3.25)
Joan Steingas (3.19)
Match: 3.42 Rating: 3.25
12/12/2018 D2 Adult 40+
3.5
Murnane - Game Day
Northern		 W Nichols Korpi Fall Wednesday 2019
Northern
Claudia Clark (3.20) 6-3
6-3		 Lori Anne Emlong (3.11)
Lauri Garvey (3.01)
Match: 3.26 Rating: 3.21
11/30/2018 D1 Adult Other
3.5
Sectionals
Murnane-High Strung
Northern		 L Thies
Northern
Claudia Clark (3.19) 6-4
6-2		 Theresa Carlson (3.58)
Michele Weddle (3.21)
Match: 3.19 Rating: 3.21
11/28/2018 D3 Adult 40+
3.5
Murnane - Game Day
Northern		 W Kamish
Northern
Christine Homsey (3.20) 2-6
7-5
1-0		 Laurie Ehle (2.99)
Becky Beck (3.10)
Match: 3.01 Rating: 3.17
11/08/2018 D1 Adult Other
3.5
MTC Swanson 9:30
Northern		 L Fred Wells A Coverdale 10:30
Northern
Lori Johnson (3.10) 6-0
6-1		 Jacqueline Kirk (3.07)
Sonali Meyer (3.33)
Match: 2.86 Rating: 3.19
11/07/2018 D2 Adult 40+
3.5
Murnane - Game Day
Northern		 W Landrus - Fall
Northern
Claudia Clark (3.24) 6-3
3-6
1-0		 Heather Landrus (2.99)
Kathy Burns (3.12)
Match: 3.14 Rating: 3.29
10/25/2018 D2 Adult Other
3.5
MTC Swanson 9:30
Northern		 W Williston Wolden 9:30
Northern
Lori Johnson (3.03) 6-3
6-2		 Susan Dando (3.00)
Tracey Eichten (3.10)
Match: 3.48 Rating: 3.41
10/24/2018 D2 Adult 40+
3.5
Murnane - Game Day
Northern		 W Kelley Headrick Net Play
Northern
Claudia Clark (3.26) 6-2
6-0		 Jane Davidson (3.07)
Marilyn Kelley (3.06)
Match: 3.51 Rating: 3.40
10/17/2018 D3 Adult 40+
3.5
Murnane - Game Day
Northern		 W Thies
Northern
Megan Ecker (3.26) 6-4
6-2		 Michele Weddle (3.23)
Karen Williams (3.27)
Match: 3.51 Rating: 3.38
10/11/2018 D2 Adult Other
3.5
MTC Swanson 9:30
Northern		 W ICT Stark 10:30
Northern
Lori Johnson (2.95) 6-2
6-2		 Tracy Robinson (3.24)
Jennifer Bastian (3.00)
Match: 3.59 Rating: 3.40
10/10/2018 D3 Adult 40+
3.5
Murnane - Game Day
Northern		 W Tresidder
Northern
Claudia Clark (3.23) 6-4
2-6
1-0		 Fran Zisman (3.34)
Jacqueline Kirk (3.06)
Match: 3.20 Rating: 3.30
09/27/2018 D2 Adult Other
3.5
MTC Swanson 9:30
Northern		 L Wooddale A York 10:30
Northern
Lori Johnson (3.04) 6-4
6-1		 Laurie Ehle (3.01)
Theresa Trollen (3.32)
Match: 3.09 Rating: 3.31
09/20/2018 D2 Adult Other
3.5
MTC Swanson 9:30
Northern		 W MTC Britzius/Hayden 12:00
Northern
Lori Johnson (3.05) 7-5
6-2		 Candace Jensen (3.12)
Cindi Andren (3.13)
Match: 3.43 Rating: 3.38
09/18/2018 D1 Adult Other
3.5
Murnane-High Strung
Northern		 L BorthwickOneDoubles
Northern
Claudia Clark (3.36) 6-2
7-6		 stacey douville (3.33)
Lori Johnson (2.94)
Match: 3.04 Rating: 3.32
08/28/2018 D1 Adult Other
3.5
Murnane-High Strung
Northern		 W BorthwickOneDoubles
Northern
Claudia Clark (3.31) 6-1
6-1		 Stephanie Harlan (3.18)
Lori Johnson (3.00)
Match: 3.50 Rating: 3.43
08/24/2018 D2 Adult 40+
3.5
Sectionals
Murnane - All Day
Northern		 L Gilchrist -I'd Hit That-Summer '18
Northern
Claudia Clark (3.37) 6-3
6-2		 Christine Leach (3.46)
Andria Galvin (3.26)
Match: 3.15 Rating: 3.36
08/23/2018 D1 Adult Other
3.5
Murnane-High Strung
Northern		 W Wolson One
Northern
Claudia Clark (3.38) 6-3
2-6
1-0		 Katie Rodriguez (3.48)
meaghan mclaughlin (3.41)
Match: 3.48 Rating: 3.44
07/17/2018 D2 Adult 18+
3.5
Storlie - WCC
Northern		 W Wolson Summer - Rally Ringers
Northern
Claudia Clark (3.35) 7-6
7-6		 Katie Rodriguez (3.54)
Stacy Foerster (3.36)
Match: 3.52 Rating: 3.44
07/10/2018 D1 Adult 18+
3.5
Storlie - WCC
Northern		 W Paulson - ICC
Northern
Kara Dillon (3.25) 6-2
6-2		 Jody Aafedt (2.95)
Samantha Hauser-Johnson (3.20)
Match: 3.45 Rating: 3.40
07/08/2018 D3 Mixed 18+
7.0
Clark WCC
Northern		 W Olig WCC
Northern
Paul Koehn (2.68) 6-1
6-4		 Mary Sams (3.01)
Doug Sams (2.37)
Match: 3.33 Rating: 3.33
06/25/2018 D1 Adult 18+
3.5
Storlie - WCC
Northern		 W Brown-Williston
Northern
Claudia Clark (3.33) 6-0
6-2		 Penelope Prescott (3.05)
Suzanne Vanacora (3.30)
Match: 3.61 Rating: 3.42
06/08/2018 D3 Mixed 18+
7.0
Clark WCC
Northern		 L Wolson GVCC
Northern
Paul Koehn (2.80) 6-2
6-3		 Norman Abramson (2.31)
Lynda Stelter (3.46)
Match: 2.94 Rating: 3.33
05/22/2018 D1 Adult 18+
3.5
Storlie - WCC
Northern		 W Paulson - ICC
Northern
Claudia Clark (3.25) 6-1
6-1		 Leslye Emptage (3.33)
jane pirtle (3.26)
Match: 3.71 Rating: 3.43
05/15/2018 D2 Adult 18+
3.5
Storlie - WCC
Northern		 W Ehle/Young
Northern
Claudia Clark (3.27) 6-3
6-4		 Laurie Ehle (2.99)
Linda Bieza (3.27)
Match: 3.30 Rating: 3.32
05/08/2018 D2 Adult 18+
3.5
Storlie - WCC
Northern		 W Mol
Northern
Mary Sams (3.13) 6-0
6-2		 Rhonda Mol (2.64)
Marie Rudd (2.77)
Match: 3.36 Rating: 3.32
05/04/2018 D3 Mixed 18+
7.0
Clark WCC
Northern		 L Sutphen 2018 Summer
Northern
Paul Koehn (2.78) 6-2
7-6		 Sandi Erickson (3.38)
Cory Zupfer (3.10)
Match: 3.39 Rating: 3.39
04/24/2018 D1 Adult Other
3.5
Murnane/Olig
Northern		 W Prescott/Lockwood
Northern
Claudia Clark (3.23) 6-1
6-3		 Lily Lockwood (3.29)
Penelope Prescott (3.12)
Match: 3.53 Rating: 3.36
04/19/2018 D2 Adult Other
3.5
Flight
MTC Swanson 9:30am
Northern		 L ICT Buchmeier 10:30am
Northern
Lori Johnson (3.00) 6-4
7-6		 Sarah LeDoux (3.20)
Denise Griep (2.94)
Match: 3.15 Rating: 3.28
04/17/2018 D1 Adult Other
3.5
Murnane/Olig
Northern		 L Leland/Pinnock
Northern
Elizabeth Olig (3.21) 6-4
6-2		 Lana Pinnock (3.41)
Rebecca Leland (3.32)
Match: 3.22 Rating: 3.30
04/12/2018 D2 Adult Other
3.5
Flight
MTC Swanson 9:30am
Northern		 L Williston Mason 9:30am
Northern
Lori Johnson (3.02) 6-4
0-6
1-0		 Penelope Prescott (3.09)
IRENE DE LA CRUZ (2.96)
Match: 3.29 Rating: 3.31
02/22/2018 D2 Adult Other
3.5
MTC Swanson 9:30am
Northern		 W Wooddale B York 10:30am
Northern
Lori Johnson (3.06) 3-6
6-1
1-0		 YI-WEN YANG (3.34)
Hung Lam (3.17)
Match: 3.46 Rating: 3.37
02/14/2018 D2 Adult 40+
3.5
Murnane - All Day
Northern		 L Wolson Winter - Rally Ringers
Northern
Podaly Jay (3.27) 6-2
6-3		 Cathy Paper (3.38)
Nancy Paulson (3.22)
Match: 3.07 Rating: 3.30
02/08/2018 D2 Adult Other
3.5
MTC Swanson 9:30am
Northern		 L Williston Mason 9:30am
Northern
Lori Johnson (3.04) 6-1
6-2		 Chris Ablack (3.20)
Deborah Zilverberg (3.00)
Match: 2.94 Rating: 3.30
01/31/2018 D2 Adult 40+
3.5
Murnane - All Day
Northern		 W Carney/Damico Over Served
Northern
Carolyn Murnane (3.42) 2-6
6-1
1-0		 Catherine Carney (3.23)
Susan Stombaugh (3.21)
Match: 3.29 Rating: 3.40
01/25/2018 D2 Adult Other
3.5
MTC Swanson 9:30am
Northern		 W ICT Conda 10:30am
Northern
Lori Johnson (2.99) 6-4
7-6		 Marcy Chamberlain (3.19)
Loryn Follrath (3.11)
Match: 3.44 Rating: 3.43
01/18/2018 D2 Adult Other
3.5
MTC Swanson 9:30am
Northern		 W FWTEC B Gordon 10:30pm
Northern
Heather Flies (3.47) 6-1
6-1		 Mary Kalish-Johnson (2.58)
Megan Tucci (3.06)
Match: 3.43 Rating: 3.43
01/17/2018 D2 Adult 40+
3.5
Murnane - All Day
Northern		 W Gabrielli - I'd Hit That
Northern
Claudia Clark (3.20) 6-0
3-6
1-0		 Carlene Forsythe (3.24)
Amy Greenlay (3.18)
Match: 3.46 Rating: 3.43
01/10/2018 D3 Adult 40+
3.5
Murnane - All Day
Northern		 W Thies
Northern
Claudia Clark (3.18) 6-3
6-3		 mara rozenburgs (3.12)
Ting-Ting Zhu (3.09)
Match: 3.44 Rating: 3.42
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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