Statistical Analysis and Estimated Tennis Ratings to the 10,000th of a Point
Match History (2017) View Advanced Player Stats
Derek Colbert (Upper Marlboro, MD)
Male 		3.5 C
12/31/2024
Estimated Dynamic Rating 3.4485
1/24/2025
Projected Year End Rating ------
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3.5 Rating Meter
Rating Meter
3.0001 - 3.5000
Recent Match History Current Rating History
2017 Overall Season [Doubles]
League/Level Total
Matches		 Win Loss Tie WPct Total
Sets		 Win Loss WPct Total
Games		 Win Loss WPct Defaults
Adult 40+ 4.0 3 1 2 0 33.3 7 2 5 28.6 60 23 37 38.3 0
Adult 55+ 7.0 3 1 2 0 33.3 6 2 4 33.3 49 24 25 49.0 0
Mixed 18+ 8.0 4 1 3 0 25.0 9 2 7 22.2 73 29 44 39.7 0
Mixed Other 7.0 3 1 2 0 33.3 7 2 5 28.6 64 27 37 42.2 0
Total 13 4 9 0 30.8 29 8 21 27.6 246 103 143 41.9 0
Match Date League Team Court Partner Opponent(s) W/L Result Match Rating
08/18/2017 Adult 40+
4.0
Districts		 Ravens Rule (Stanley)
Mid-Atlantic		 D1 Jonathan Ferrell
(3.58) 		Gerald McClellan
(3.64)
Carlos Miletti
(3.58) 		W 5-7
7-6
1-0		 3.52 3.44
07/12/2017 Adult 55+
7.0		 Anderson & Anderson
Mid-Atlantic		 D3 John Klaffky
(3.19) 		John Harrington
(3.78)
anthony rickert
(2.90) 		L 6-4
6-4		 3.36 3.40
07/05/2017 Adult 55+
7.0		 Anderson & Anderson
Mid-Atlantic		 D1 Christian Harriott
(2.57) 		Stanley Freeman
(3.27)
Fabio Saturni
(3.58) 		L 6-1
6-3		 3.51 3.42
06/30/2017 Mixed Other
7.0		 Anderson & Anderson
Mid-Atlantic		 D2 Lolita Brown
(2.82) 		Diana Everline
(3.18)
Thomas Wellems
(3.27) 		W 3-6
7-6
1-0		 3.59 3.58
06/28/2017 Adult 55+
7.0		 Anderson & Anderson
Mid-Atlantic		 D3 John Klaffky
(3.15) 		Edward Levin
(3.02)
Ambrose Sampson
(3.02) 		W 6-1
6-0		 3.57 3.43
06/24/2017 Adult 40+
4.0		 Ravens Rule (Stanley)
Mid-Atlantic		 D1 Gerald Creech
(3.61) 		Brock McClung
(3.57)
Celestine Chumbong
(3.71) 		L 6-4
6-4		 3.42 3.39
06/23/2017 Mixed Other
7.0		 Anderson & Anderson
Mid-Atlantic		 D1 Lolita Brown
(2.79) 		Larry Johnson
(3.81)
Cassaundra Britton
(2.93) 		L 6-4
6-4		 3.67 3.60
06/17/2017 Adult 40+
4.0		 Ravens Rule (Stanley)
Mid-Atlantic		 D2 Brian Stanley
(3.42) 		Charles Adams
(3.42)
Robert Zawislak
(3.72) 		L 6-1
6-1		 3.23 3.37
06/09/2017 Mixed Other
7.0		 Anderson & Anderson
Mid-Atlantic		 D3 Lolita Brown
(2.75) 		Francine Walden
(2.98)
John Harrington
(3.73) 		L 7-6
6-2		 3.62 3.59
03/04/2017 Mixed 18+
8.0		 Good Gets (Taylor)
Mid-Atlantic		 D1 Charlene Collier
(3.67) 		Agnes Trice
(3.86)
Moe Patterson
(3.75) 		L 6-1
6-2		 3.44 3.55
02/25/2017 Mixed 18+
8.0		 Good Gets (Taylor)
Mid-Atlantic		 D1 Charlene Collier
(3.63) 		Janette O Logan
(3.76)
kevin woodruff
(3.91) 		L 4-6
6-2
1-0		 3.72 3.61
02/11/2017 Mixed 18+
8.0		 Good Gets (Taylor)
Mid-Atlantic		 D1 Charlene Collier
(3.63) 		Philip Weiner
(4.13)
LISA GRIMES
(3.34) 		L 7-6
6-2		 3.57 3.57
01/21/2017 Mixed 18+
8.0		 Good Gets (Taylor)
Mid-Atlantic		 D3 Charlene Collier
(3.57) 		Nicole White
(3.61)
John Wyche
(3.59) 		W 6-3
4-5		 3.63 3.57
08/18/2017 D1 Adult 40+
4.0
Districts
Ravens Rule (Stanley)
Mid-Atlantic		 W Harrington
Mid-Atlantic
Jonathan Ferrell (3.58) 5-7
7-6
1-0		 Gerald McClellan (3.64)
Carlos Miletti (3.58)
Match: 3.52 Rating: 3.44
07/12/2017 D3 Adult 55+
7.0
Anderson & Anderson
Mid-Atlantic		 L McKeon
Mid-Atlantic
John Klaffky (3.19) 6-4
6-4		 John Harrington (3.78)
anthony rickert (2.90)
Match: 3.36 Rating: 3.40
07/05/2017 D1 Adult 55+
7.0
Anderson & Anderson
Mid-Atlantic		 L ""Davis""
Mid-Atlantic
Christian Harriott (2.57) 6-1
6-3		 Stanley Freeman (3.27)
Fabio Saturni (3.58)
Match: 3.51 Rating: 3.42
06/30/2017 D2 Mixed Other
7.0
Anderson & Anderson
Mid-Atlantic		 W Ivan
Mid-Atlantic
Lolita Brown (2.82) 3-6
7-6
1-0		 Diana Everline (3.18)
Thomas Wellems (3.27)
Match: 3.59 Rating: 3.58
06/28/2017 D3 Adult 55+
7.0
Anderson & Anderson
Mid-Atlantic		 W Netsmen
Mid-Atlantic
John Klaffky (3.15) 6-1
6-0		 Edward Levin (3.02)
Ambrose Sampson (3.02)
Match: 3.57 Rating: 3.43
06/24/2017 D1 Adult 40+
4.0
Ravens Rule (Stanley)
Mid-Atlantic		 L Net Grinders (Ward)
Mid-Atlantic
Gerald Creech (3.61) 6-4
6-4		 Brock McClung (3.57)
Celestine Chumbong (3.71)
Match: 3.42 Rating: 3.39
06/23/2017 D1 Mixed Other
7.0
Anderson & Anderson
Mid-Atlantic		 L Tie Breakers
Mid-Atlantic
Lolita Brown (2.79) 6-4
6-4		 Larry Johnson (3.81)
Cassaundra Britton (2.93)
Match: 3.67 Rating: 3.60
06/17/2017 D2 Adult 40+
4.0
Ravens Rule (Stanley)
Mid-Atlantic		 L Net Grinders (Ward)
Mid-Atlantic
Brian Stanley (3.42) 6-1
6-1		 Charles Adams (3.42)
Robert Zawislak (3.72)
Match: 3.23 Rating: 3.37
06/09/2017 D3 Mixed Other
7.0
Anderson & Anderson
Mid-Atlantic		 L Ivan
Mid-Atlantic
Lolita Brown (2.75) 7-6
6-2		 Francine Walden (2.98)
John Harrington (3.73)
Match: 3.62 Rating: 3.59
03/04/2017 D1 Mixed 18+
8.0
Good Gets (Taylor)
Mid-Atlantic		 L Ace of Clubs (Patterson)
Mid-Atlantic
Charlene Collier (3.67) 6-1
6-2		 Agnes Trice (3.86)
Moe Patterson (3.75)
Match: 3.44 Rating: 3.55
02/25/2017 D1 Mixed 18+
8.0
Good Gets (Taylor)
Mid-Atlantic		 L The Vicious Vollies (Logan)
Mid-Atlantic
Charlene Collier (3.63) 4-6
6-2
1-0		 Janette O Logan (3.76)
kevin woodruff (3.91)
Match: 3.72 Rating: 3.61
02/11/2017 D1 Mixed 18+
8.0
Good Gets (Taylor)
Mid-Atlantic		 L Winter Warriors (Phung)
Mid-Atlantic
Charlene Collier (3.63) 7-6
6-2		 Philip Weiner (4.13)
LISA GRIMES (3.34)
Match: 3.57 Rating: 3.57
01/21/2017 D3 Mixed 18+
8.0
Good Gets (Taylor)
Mid-Atlantic		 W Ace of Clubs (Patterson)
Mid-Atlantic
Charlene Collier (3.57) 6-3
4-5		 Nicole White (3.61)
John Wyche (3.59)
Match: 3.63 Rating: 3.57
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S Self rated or unrated player involved in match so no match rating calculated for current player.
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