Statistical Analysis and Estimated Tennis Ratings to the 10,000th of a Point
Match History (2022) View Advanced Player Stats
gerald lammers (Ann Arbor, MI)
Male 		4.0 C
12/31/2023
Estimated Dynamic Rating 3.7912
8/30/2024
Projected Year End Rating ------
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4.0 Rating Meter
Rating Meter
3.5001 - 4.0000
Recent Match History Current Rating History
2022 Overall Season [Doubles]
League/Level Total
Matches		 Win Loss Tie WPct Total
Sets		 Win Loss WPct Total
Games		 Win Loss WPct Defaults
Adult 18+ 4.0 7 2 5 0 28.6 16 6 10 37.5 143 64 79 44.8 0
Adult 40+ 4.0 5 2 3 0 40.0 13 6 7 46.2 98 45 53 45.9 0
Combo 7.5 2 1 1 0 50.0 5 3 2 60.0 39 23 16 59.0 0
Mixed 40+ 7.0 5 2 3 0 40.0 10 4 6 40.0 100 43 57 43.0 0
Mixed 40+ 8.0 2 1 1 0 50.0 4 2 2 50.0 33 16 17 48.5 0
Mixed Other 7.5 3 2 1 0 66.7 6 4 2 66.7 62 32 30 51.6 0
Total 24 10 14 0 41.7 54 25 29 46.3 475 223 252 46.9 0
Match Date League Team Court Partner Opponent(s) W/L Result Match Rating
11/06/2022 Combo
7.5		 1LIB-STPIERRE 75 MEN COMBO SEM F1
Midwest		 D3 Brandon Rogers
(3.26) 		Jacob Balash
(3.75)
Nathan Moseley
(3.38) 		L 6-4
5-7
1-0		 3.70 -----
10/09/2022 Combo
7.5		 1LIB-STPIERRE 75 MEN COMBO SEM F1
Midwest		 D3 Jose Briceno
(3.09) 		Yong Zhang
(-----)
Jianying Li
(3.55) 		W 6-2
6-2		 S -----
07/31/2022 Mixed Other
7.5		 2LIB-BRICENO 7.5 Combo Mixed sat/sun SEM
Midwest		 D2 Frances Carlson
(3.39) 		Andrew Mah
(3.85)
Hanna Song
(3.28) 		W 6-4
7-6		 3.68 3.52
07/26/2022 Adult 18+
4.0		 3LIB-STPIERRE 40M 18&O AD TUES SEM F2
Midwest		 D2 Ryan Rooney
(3.88) 		Colin Wilcox
(3.49)
James McKinney
(3.50) 		L 6-3
7-5		 S 3.52
07/14/2022 Adult 40+
4.0		 4LIB-LAMMERS 40M 40&O AD THURS SEM F1
Midwest		 D2 Brian Szymanski
(3.65) 		Jeff Sheng
(3.57)
Todd Lucas
(3.83) 		W 7-5
2-6
1-0		 3.61 3.52
07/12/2022 Adult 18+
4.0		 3LIB-STPIERRE 40M 18&O AD TUES SEM F2
Midwest		 D2 Brian Szymanski
(3.66) 		Egor Alekseev
(3.62)
Jason Lee
(3.61) 		W 6-3
6-4		 3.69 3.52
07/10/2022 Tournament
CM8.0d		 2022 Ann Arbor City Tournament - Doubles S Brian Szymanski
(3.63) 		Dharshan Medonza
(3.89)
Yujing Song
(3.98) 		L 6-2
5-7
1-0		 3.79 -----
07/09/2022 Tournament
CM8.0d		 2022 Ann Arbor City Tournament - Doubles Q Brian Szymanski
(3.63) 		Egor Alekseev
(3.56)
Frederick Smith
(3.74) 		W 6-3
4-6
1-0		 3.63 -----
07/09/2022 Tournament
CM8.0d		 2022 Ann Arbor City Tournament - Doubles 16 Brian Szymanski
(3.63) 		Terry Bowman
(3.61)
Kartheek Gangadhara
(3.04) 		W 6-1
7-6		 3.43 -----
06/30/2022 Adult 40+
4.0		 4LIB-LAMMERS 40M 40&O AD THURS SEM F1
Midwest		 D2 Jason Brater
(3.61) 		Michael Balagna
(3.55)
Brian Braun
(3.74) 		W 6-4
6-4		 3.66 3.51
06/28/2022 Adult 18+
4.0		 3LIB-STPIERRE 40M 18&O AD TUES SEM F2
Midwest		 D2 Brian Szymanski
(3.61) 		Joe Beltran
(3.38)
James Douglass
(3.56) 		L 6-3
7-5		 3.28 3.45
06/23/2022 Adult 40+
4.0		 4LIB-LAMMERS 40M 40&O AD THURS SEM F1
Midwest		 D1 Ryan Rooney
(3.93) 		Matthew Cuff
(3.54)
Timothy Brewer
(3.85) 		L 7-6
6-2		 3.34 3.48
06/21/2022 Adult 18+
4.0		 3LIB-STPIERRE 40M 18&O AD TUES SEM F2
Midwest		 D1 Ryan Rooney
(3.99) 		Mitchell Gajar
(3.49)
Adam DiMaggio
(3.91) 		L 6-2
6-3		 3.21 3.48
06/14/2022 Adult 18+
4.0		 3LIB-STPIERRE 40M 18&O AD TUES SEM F2
Midwest		 D1 Ryan Rooney
(3.94) 		Noe Erasga
(3.71)
Jeff Sheng
(3.47) 		L 6-1
5-7
1-0		 S 3.50
06/11/2022 Mixed Other
7.5		 2LIB-BRICENO 7.5 Combo Mixed sat/sun SEM
Midwest		 D1 Eira Duran
(3.39) 		Charles Roe
(3.85)
Kayoko Chatell
(3.39) 		L 6-3
6-4		 3.50 3.48
06/09/2022 Adult 40+
4.0		 4LIB-LAMMERS 40M 40&O AD THURS SEM F1
Midwest		 D1 Ryan Rooney
(4.02) 		Jon Bardsley
(3.51)
Frederick Smith
(3.71) 		L 6-1
3-6
1-0		 3.29 3.50
06/04/2022 Mixed Other
7.5		 2LIB-BRICENO 7.5 Combo Mixed sat/sun SEM
Midwest		 D2 Eira Duran
(3.39) 		Kamran Diba
(3.18)
Sylvia Laman
(-----) 		W 6-4
6-4		 S 3.44
05/31/2022 Adult 18+
4.0		 3LIB-STPIERRE 40M 18&O AD TUES SEM F2
Midwest		 D1 Ryan Rooney
(4.02) 		Tim Crouson
(3.33)
Alexander Kret
(3.68) 		W 7-6
6-4		 S 3.55
05/19/2022 Adult 40+
4.0		 4LIB-LAMMERS 40M 40&O AD THURS SEM F1
Midwest		 D1 Brian Szymanski
(3.54) 		Charles Roe
(3.85)
Carlos MendesdeLeon
(3.79) 		L 6-2
4-6
1-0		 3.72 3.55
05/17/2022 Adult 18+
4.0		 3LIB-STPIERRE 40M 18&O AD TUES SEM F2
Midwest		 D1 Ryan Rooney
(4.04) 		Jeremy Taylor
(3.91)
Brad Tannen
(3.61) 		L 5-7
6-3
1-0		 3.44 3.50
03/27/2022 Mixed 40+
7.0		 4LIB-ST PIERRE 7.0 mix 40&O SEM f1
Midwest		 D2 Tammy Watson
(2.82) 		Dennis Valenti
(3.05)
Karen Hale
(3.03) 		L 6-2
6-4		 3.18 3.44
03/11/2022 Mixed 40+
7.0		 4LIB-ST PIERRE 7.0 mix 40&O SEM f1
Midwest		 D1 Mary Beth Ofstedal
(2.94) 		Chih Lin
(3.30)
Peggy Moran
(3.71) 		L 6-2
6-1		 S 3.49
03/06/2022 Mixed 40+
7.0		 4LIB-ST PIERRE 7.0 mix 40&O SEM f1
Midwest		 D2 Tammy Watson
(2.83) 		Jane Coffey
(3.10)
Michael Coffey
(2.97) 		W 6-4
7-6		 3.44 3.49
02/26/2022 Mixed 40+
8.0		 6LIB-SAULD 8.0 mix 40&O SEM f1
Midwest		 D2 Laura Gago
(3.81) 		Egor Alekseev
(3.61)
Yelena Aganesova
(3.01) 		W 6-2
6-3		 3.40 3.49
02/18/2022 Mixed 40+
7.0		 4LIB-ST PIERRE 7.0 mix 40&O SEM f1
Midwest		 D2 Tammy Watson
(2.85) 		Patrick Lee
(3.51)
Jeanne Cooper
(2.81) 		L 6-2
7-6		 3.36 3.49
02/05/2022 Mixed 40+
8.0		 6LIB-SAULD 8.0 mix 40&O SEM f1
Midwest		 D3 Sara Vogler
(3.53) 		Brad Tannen
(3.61)
Lisa Morgan
(3.88) 		L 6-2
6-2		 3.45 3.51
01/28/2022 Mixed 40+
7.0		 4LIB-ST PIERRE 7.0 mix 40&O SEM f1
Midwest		 D1 Mary Beth Ofstedal
(2.93) 		Petra Schroeder
(3.20)
Thomas Belcher
(3.17) 		W 6-4
7-6		 3.54 3.52
11/06/2022 D3 Combo
7.5
1LIB-STPIERRE 75 MEN COMBO SEM F1
Midwest		 L 2VTC-MOSELEY 75 MEN COMBO SEM F1
Midwest
Brandon Rogers (3.26) 6-4
5-7
1-0		 Jacob Balash (3.75)
Nathan Moseley (3.38)
Match: 3.70 Rating: -----
10/09/2022 D3 Combo
7.5
1LIB-STPIERRE 75 MEN COMBO SEM F1
Midwest		 W 3FAC-XU 75 MEN COMBO SEM F1
Midwest
Jose Briceno (3.09) 6-2
6-2		 Yong Zhang (-----)
Jianying Li (3.55)
Match: S Rating: -----
07/31/2022 D2 Mixed Other
7.5
2LIB-BRICENO 7.5 Combo Mixed sat/sun SEM
Midwest		 W 4TRAVIS-ROE 7.5 Combo Mixed sat/sun SEM
Midwest
Frances Carlson (3.39) 6-4
7-6		 Andrew Mah (3.85)
Hanna Song (3.28)
Match: 3.68 Rating: 3.52
07/26/2022 D2 Adult 18+
4.0
3LIB-STPIERRE 40M 18&O AD TUES SEM F2
Midwest		 L 6HV-CLARKE 40M 18&O AD TUES SEM F2
Midwest
Ryan Rooney (3.88) 6-3
7-5		 Colin Wilcox (3.49)
James McKinney (3.50)
Match: S Rating: 3.52
07/14/2022 D2 Adult 40+
4.0
4LIB-LAMMERS 40M 40&O AD THURS SEM F1
Midwest		 W 1HV-BREWER 40M 40&O AD THURS SEM F1
Midwest
Brian Szymanski (3.65) 7-5
2-6
1-0		 Jeff Sheng (3.57)
Todd Lucas (3.83)
Match: 3.61 Rating: 3.52
07/12/2022 D2 Adult 18+
4.0
3LIB-STPIERRE 40M 18&O AD TUES SEM F2
Midwest		 W 1AAREC-ALEKSEEV-sky 40M 18&O AD TUES SEM F2
Midwest
Brian Szymanski (3.66) 6-3
6-4		 Egor Alekseev (3.62)
Jason Lee (3.61)
Match: 3.69 Rating: 3.52
2022 Ann Arbor City Tournament - Doubles
07/10/2022 S Tournament
CM8.0d
L
Brian Szymanski (3.63) 6-2
5-7
1-0		 Dharshan Medonza (3.89)
Yujing Song (3.98)
Match: 3.79 Rating: -----
2022 Ann Arbor City Tournament - Doubles
07/09/2022 Q Tournament
CM8.0d
W
Brian Szymanski (3.63) 6-3
4-6
1-0		 Egor Alekseev (3.56)
Frederick Smith (3.74)
Match: 3.63 Rating: -----
2022 Ann Arbor City Tournament - Doubles
07/09/2022 16 Tournament
CM8.0d
W
Brian Szymanski (3.63) 6-1
7-6		 Terry Bowman (3.61)
Kartheek Gangadhara (3.04)
Match: 3.43 Rating: -----
06/30/2022 D2 Adult 40+
4.0
4LIB-LAMMERS 40M 40&O AD THURS SEM F1
Midwest		 W 2CHIP-DOUGLASS 40M 40&O AD THURS SEM F1
Midwest
Jason Brater (3.61) 6-4
6-4		 Michael Balagna (3.55)
Brian Braun (3.74)
Match: 3.66 Rating: 3.51
06/28/2022 D2 Adult 18+
4.0
3LIB-STPIERRE 40M 18&O AD TUES SEM F2
Midwest		 L 2CHIP-MICHAELS 40M 18&O AD TUES SEM F2
Midwest
Brian Szymanski (3.61) 6-3
7-5		 Joe Beltran (3.38)
James Douglass (3.56)
Match: 3.28 Rating: 3.45
06/23/2022 D1 Adult 40+
4.0
4LIB-LAMMERS 40M 40&O AD THURS SEM F1
Midwest		 L 1HV-BREWER 40M 40&O AD THURS SEM F1
Midwest
Ryan Rooney (3.93) 7-6
6-2		 Matthew Cuff (3.54)
Timothy Brewer (3.85)
Match: 3.34 Rating: 3.48
06/21/2022 D1 Adult 18+
4.0
3LIB-STPIERRE 40M 18&O AD TUES SEM F2
Midwest		 L 4RCAA-SHAW 40M 18&O AD TUES SEM F2
Midwest
Ryan Rooney (3.99) 6-2
6-3		 Mitchell Gajar (3.49)
Adam DiMaggio (3.91)
Match: 3.21 Rating: 3.48
06/14/2022 D1 Adult 18+
4.0
3LIB-STPIERRE 40M 18&O AD TUES SEM F2
Midwest		 L 6HV-CLARKE 40M 18&O AD TUES SEM F2
Midwest
Ryan Rooney (3.94) 6-1
5-7
1-0		 Noe Erasga (3.71)
Jeff Sheng (3.47)
Match: S Rating: 3.50
06/11/2022 D1 Mixed Other
7.5
2LIB-BRICENO 7.5 Combo Mixed sat/sun SEM
Midwest		 L 4TRAVIS-ROE 7.5 Combo Mixed sat/sun SEM
Midwest
Eira Duran (3.39) 6-3
6-4		 Charles Roe (3.85)
Kayoko Chatell (3.39)
Match: 3.50 Rating: 3.48
06/09/2022 D1 Adult 40+
4.0
4LIB-LAMMERS 40M 40&O AD THURS SEM F1
Midwest		 L 2CHIP-DOUGLASS 40M 40&O AD THURS SEM F1
Midwest
Ryan Rooney (4.02) 6-1
3-6
1-0		 Jon Bardsley (3.51)
Frederick Smith (3.71)
Match: 3.29 Rating: 3.50
06/04/2022 D2 Mixed Other
7.5
2LIB-BRICENO 7.5 Combo Mixed sat/sun SEM
Midwest		 W 3HV-COOPER 7.5 Combo Mixed sat/sun SEM
Midwest
Eira Duran (3.39) 6-4
6-4		 Kamran Diba (3.18)
Sylvia Laman (-----)
Match: S Rating: 3.44
05/31/2022 D1 Adult 18+
4.0
3LIB-STPIERRE 40M 18&O AD TUES SEM F2
Midwest		 W 5VTC-inside-MOSELEY 40M 18&O AD TUES SEM F2
Midwest
Ryan Rooney (4.02) 7-6
6-4		 Tim Crouson (3.33)
Alexander Kret (3.68)
Match: S Rating: 3.55
05/19/2022 D1 Adult 40+
4.0
4LIB-LAMMERS 40M 40&O AD THURS SEM F1
Midwest		 L 3TRAVIS-ROE 40M 40&O AD THURS SEM F1
Midwest
Brian Szymanski (3.54) 6-2
4-6
1-0		 Charles Roe (3.85)
Carlos MendesdeLeon (3.79)
Match: 3.72 Rating: 3.55
05/17/2022 D1 Adult 18+
4.0
3LIB-STPIERRE 40M 18&O AD TUES SEM F2
Midwest		 L 4RCAA-SHAW 40M 18&O AD TUES SEM F2
Midwest
Ryan Rooney (4.04) 5-7
6-3
1-0		 Jeremy Taylor (3.91)
Brad Tannen (3.61)
Match: 3.44 Rating: 3.50
03/27/2022 D2 Mixed 40+
7.0
4LIB-ST PIERRE 7.0 mix 40&O SEM f1
Midwest		 L 5LIB-OBRIEN 7.0 mix 40&O SEM f1
Midwest
Tammy Watson (2.82) 6-2
6-4		 Dennis Valenti (3.05)
Karen Hale (3.03)
Match: 3.18 Rating: 3.44
03/11/2022 D1 Mixed 40+
7.0
4LIB-ST PIERRE 7.0 mix 40&O SEM f1
Midwest		 L 1HV-REECE 7.0 mix 40&O SEM f1
Midwest
Mary Beth Ofstedal (2.94) 6-2
6-1		 Chih Lin (3.30)
Peggy Moran (3.71)
Match: S Rating: 3.49
03/06/2022 D2 Mixed 40+
7.0
4LIB-ST PIERRE 7.0 mix 40&O SEM f1
Midwest		 W 6HV-COFFEY 7.0 mix 40&O SEM f1
Midwest
Tammy Watson (2.83) 6-4
7-6		 Jane Coffey (3.10)
Michael Coffey (2.97)
Match: 3.44 Rating: 3.49
02/26/2022 D2 Mixed 40+
8.0
6LIB-SAULD 8.0 mix 40&O SEM f1
Midwest		 W 1CHIP-DOUGLASS 8.0 mix 40&O SEM f1
Midwest
Laura Gago (3.81) 6-2
6-3		 Egor Alekseev (3.61)
Yelena Aganesova (3.01)
Match: 3.40 Rating: 3.49
02/18/2022 D2 Mixed 40+
7.0
4LIB-ST PIERRE 7.0 mix 40&O SEM f1
Midwest		 L 5LIB-OBRIEN 7.0 mix 40&O SEM f1
Midwest
Tammy Watson (2.85) 6-2
7-6		 Patrick Lee (3.51)
Jeanne Cooper (2.81)
Match: 3.36 Rating: 3.49
02/05/2022 D3 Mixed 40+
8.0
6LIB-SAULD 8.0 mix 40&O SEM f1
Midwest		 L 2CHIP-PALMER 8.0 mix 40&O SEM f1
Midwest
Sara Vogler (3.53) 6-2
6-2		 Brad Tannen (3.61)
Lisa Morgan (3.88)
Match: 3.45 Rating: 3.51
01/28/2022 D1 Mixed 40+
7.0
4LIB-ST PIERRE 7.0 mix 40&O SEM f1
Midwest		 W 6HV-COFFEY 7.0 mix 40&O SEM f1
Midwest
Mary Beth Ofstedal (2.93) 6-4
7-6		 Petra Schroeder (3.20)
Thomas Belcher (3.17)
Match: 3.54 Rating: 3.52
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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