Statistical Analysis and Estimated Tennis Ratings to the 10,000th of a Point
Match History (2019) View Advanced Player Stats
Jonathan Lefferts (San Anselmo, CA)
Male 		4.5 C
12/31/2023
Estimated Dynamic Rating 4.2174
11/15/2024
Projected Year End Rating ------
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4.5 Rating Meter
Rating Meter
4.0001 - 4.5000
Recent Match History Current Rating History
2019 Adult 40+ Season
League/Level Total
Matches		 Win Loss Tie WPct Total
Sets		 Win Loss WPct Total
Games		 Win Loss WPct Defaults
Adult 40+ 4.5 7 4 3 0 57.1 17 10 7 58.8 117 67 50 57.3 0
Total 7 4 3 0 57.1 17 10 7 58.8 117 67 50 57.3 0
Match Date League Team Court Partner Opponent(s) W/L Result Match Rating
11/16/2019 Adult 40+
4.5		 MARIN TC 40AM4.5+A
No California		 D3 Jeff Marquis
(4.07) 		Blain Wong
(4.05)
Jonathan Chinn
(4.38) 		W 3-6
6-1
1-0		 4.40 4.29
11/16/2019 Adult 40+
4.5		 MARIN TC 40AM4.5+A
No California		 D3 Jeffery Birkenseer
(4.11) 		Andrew Dailey
(4.34)
Joel Garrett
(4.11) 		L 6-2
6-2		 4.05 4.27
10/21/2019 Adult 40+
4.5		 MARIN TC 40AM4.5+A
No California		 D1 Daniel Carlson
(4.17) 		Ron Stearns
(4.13)
John Macri
(3.86) 		W 6-1
6-1		 4.49 4.42
03/30/2019 Adult 40+
4.5		 MARIN TC 40AM4.5+A
No California		 D3 Moses Gittens
(4.22) 		Thomas Byrne
(4.20)
Blain Wong
(3.99) 		W 6-2
7-5		 4.36 4.39
03/17/2019 Adult 40+
4.5		 MARIN TC 40AM4.5+A
No California		 D1 Jeffery Birkenseer
(4.30) 		Kevin Alfaro
(4.50)
Henry Schlangen
(4.12) 		W 6-4
6-1		 S 4.40
03/15/2019 Adult 40+
4.5		 MARIN TC 40AM4.5+A
No California		 D3 Jeffery Birkenseer
(4.30) 		Steffen Kuehr
(4.29)
Thomas Judd
(4.28) 		L 6-3
0-6
1-0		 4.40 4.40
01/12/2019 Adult 40+
4.5		 MARIN TC 40AM4.5+A
No California		 D2 Daniel Carlson
(4.16) 		Jeff Babikian
(4.41)
Dan Oppenheim
(4.50) 		L 6-1
3-6
1-0		 4.47 4.40
11/16/2019 D3 Adult 40+
4.5
MARIN TC 40AM4.5+A
No California		 W ROHNERT PK TC/MAGNOLIA/M PK 40AM4.5+A
No California
Jeff Marquis (4.07) 3-6
6-1
1-0		 Blain Wong (4.05)
Jonathan Chinn (4.38)
Match: 4.40 Rating: 4.29
11/16/2019 D3 Adult 40+
4.5
MARIN TC 40AM4.5+A
No California		 L CANON S and TC 40AM4.5+A
No California
Jeffery Birkenseer (4.11) 6-2
6-2		 Andrew Dailey (4.34)
Joel Garrett (4.11)
Match: 4.05 Rating: 4.27
10/21/2019 D1 Adult 40+
4.5
MARIN TC 40AM4.5+A
No California		 W ROLLING HILLS 40AM4.5+A
No California
Daniel Carlson (4.17) 6-1
6-1		 Ron Stearns (4.13)
John Macri (3.86)
Match: 4.49 Rating: 4.42
03/30/2019 D3 Adult 40+
4.5
MARIN TC 40AM4.5+A
No California		 W ROHNERT PK TC/MAGNOLIA/M PK 40AM4.5+A
No California
Moses Gittens (4.22) 6-2
7-5		 Thomas Byrne (4.20)
Blain Wong (3.99)
Match: 4.36 Rating: 4.39
03/17/2019 D1 Adult 40+
4.5
MARIN TC 40AM4.5+A
No California		 W CRANE PK 40AM4.5+A
No California
Jeffery Birkenseer (4.30) 6-4
6-1		 Kevin Alfaro (4.50)
Henry Schlangen (4.12)
Match: S Rating: 4.40
03/15/2019 D3 Adult 40+
4.5
MARIN TC 40AM4.5+A
No California		 L TIBURON PEN C 40AM4.5+A
No California
Jeffery Birkenseer (4.30) 6-3
0-6
1-0		 Steffen Kuehr (4.29)
Thomas Judd (4.28)
Match: 4.40 Rating: 4.40
01/12/2019 D2 Adult 40+
4.5
MARIN TC 40AM4.5+A
No California		 L TIBURON PEN C 40AM4.5+A
No California
Daniel Carlson (4.16) 6-1
3-6
1-0		 Jeff Babikian (4.41)
Dan Oppenheim (4.50)
Match: 4.47 Rating: 4.40
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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