Statistical Analysis and Estimated Tennis Ratings to the 10,000th of a Point
Match History (2021) View Advanced Player Stats
zhen zu (Charlotte, NC)
Male 		3.5 C
12/31/2024
Estimated Dynamic Rating 3.4575
11/24/2024
Projected Year End Rating 3.4733
12/8/2024
[3.5C Low]
3.5 Rating Meter
Rating Meter
3.0001 - 3.5000
Recent Match History Current Rating History
2021 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 10 5 5 0 50.0 23 10 13 43.5 182 82 100 45.1 0
Combo 7.5 3 0 3 0 0.0 8 2 6 25.0 66 30 36 45.5 0
Flex Format 8.5 4 1 3 0 25.0 8 2 6 25.0 72 34 38 47.2 0
Mixed 18+ 8.0 5 1 4 0 20.0 11 3 8 27.3 103 46 57 44.7 0
Total 22 7 15 0 31.8 50 17 33 34.0 423 192 231 45.4 0
Match Date League Team Court Partner Opponent(s) W/L Result Match Rating
09/13/2021 Combo
7.5		 CJones/RSankaran (Life Time)
Southern		 D3 Rajesh Sankaran
(3.39) 		Rod Wilkes
(3.13)
Andrew Ross
(-----) 		L 6-2
3-6
1-0		 S -----
08/23/2021 Combo
7.5		 CJones/RSankaran (Life Time)
Southern		 D3 David Joo
(2.99) 		Mark Miller
(3.88)
Francis Dantino
(3.31) 		L 7-5
6-4		 3.80 -----
08/09/2021 Combo
7.5		 CJones/RSankaran (Life Time)
Southern		 D3 German Echeverri
(3.07) 		Chris McIver
(-----)
Brian Conlon
(-----) 		L 5-7
7-6
1-0		 S -----
08/03/2021 Mixed 18+
8.0		 DJoo (Life Time)
Southern		 D2 Cindi Helms
(3.61) 		Michelle Ziewacz
(3.37)
Stephen Woodall
(4.05) 		L 7-6
6-2		 3.54 3.53
07/20/2021 Mixed 18+
8.0		 DJoo (Life Time)
Southern		 D2 Trista Holwager
(3.47) 		Randall Maddle
(3.95)
Fumiyo Ono
(3.50) 		L 6-4
6-2		 3.55 3.53
07/13/2021 Mixed 18+
8.0		 DJoo (Life Time)
Southern		 D2 Cecilia Drake
(3.67) 		Amy Redfield
(4.03)
Andrew VanDerveer
(3.45) 		L 4-6
7-5
1-0		 S 3.52
07/06/2021 Flex Format
8.5		 RGum (Life Time)
Southern		 D1M Andrew VanDerveer
(3.48) 		Jim Zhang
(3.94)
Nigel Zheng
(3.27) 		L 6-3
6-3		 3.46 -----
06/29/2021 Mixed 18+
8.0		 DJoo (Life Time)
Southern		 D3 Cecilia Drake
(3.62) 		Meaghan Ahern
(3.62)
Geoff Rhodes
(3.55) 		W 6-3
6-4		 S 3.52
06/26/2021 Flex Format
8.5		 RGum (Life Time)
Southern		 D1M Andrew VanDerveer
(3.48) 		Dan Brantmeyer
(3.90)
Joseph Clarke
(3.79) 		L 7-6
6-2		 3.76 -----
06/15/2021 Mixed 18+
8.0		 DJoo (Life Time)
Southern		 D2 Trista Holwager
(3.47) 		Brandon Thio
(3.56)
Catherine Bryant
(3.64) 		L 6-4
7-5		 S 3.52
06/12/2021 Flex Format
8.5		 RGum (Life Time)
Southern		 D1M Roger Gum
(3.41) 		Krishna Swain
(3.01)
Tanmay Jain
(-----) 		W 6-0
6-0		 S -----
06/05/2021 Flex Format
8.5		 RGum (Life Time)
Southern		 D1M Roger Gum
(3.41) 		Richard Schanzlin
(3.73)
Frank Fisher
(-----) 		L 7-6
6-2		 S -----
06/01/2021 Adult 40+
4.0		 BMoran (Life Time)
Southern		 D1 Roger Gum
(3.41) 		Patrick Murchison
(3.68)
Scott Waldrop
(3.59) 		L 7-6
7-5		 3.60 3.54
05/18/2021 Adult 40+
4.0		 BMoran (Life Time)
Southern		 D1 William Krueger
(3.63) 		Kibbee Reese
(3.73)
Jeffrey Trivette
(3.68) 		L 6-1
6-1		 3.26 3.47
05/12/2021 Adult 40+
4.0		 BMoran (Life Time)
Southern		 D1 Brian Moran
(3.62) 		James Nichols
(3.82)
David Grindstaff
(3.53) 		L 6-2
6-3		 3.41 3.51
04/27/2021 Adult 40+
4.0		 BMoran (Life Time)
Southern		 D1 William Krueger
(3.60) 		Kyle Johnson
(3.58)
ROB SAPPENFIELD
(3.53) 		W 4-6
6-1
1-0		 3.63 3.52
04/20/2021 Adult 40+
4.0		 BMoran (Life Time)
Southern		 D1 William Krueger
(3.56) 		Bill Brupbacher
(3.52)
kevin conway
(3.85) 		W 7-5
4-6
1-0		 3.68 3.52
04/13/2021 Adult 40+
4.0		 BMoran (Life Time)
Southern		 D2 Dimitrijus Sazinas
(3.69) 		Brian Cook
(3.61)
James Seward
(3.92) 		W 6-4
4-6
1-0		 3.66 3.49
03/30/2021 Adult 40+
4.0		 BMoran (Life Time)
Southern		 D1 Biju Nair
(3.46) 		Andrew Hocek
(3.52)
Krishna Mathis
(3.59) 		L 6-1
6-2		 3.25 3.43
03/23/2021 Adult 40+
4.0		 BMoran (Life Time)
Southern		 D2 Larry Hubatka
(3.80) 		Chandrasekar Swaminathan
(3.88)
Hakan Pehrsson
(-----) 		L 6-2
6-1		 S 3.52
03/16/2021 Adult 40+
4.0		 BMoran (Life Time)
Southern		 D3 Dimitrijus Sazinas
(-----) 		Simas Petrikis
(-----)
Mark Knowles
(3.50) 		W 6-1
6-2		 S 3.52
03/09/2021 Adult 40+
4.0		 BMoran (Life Time)
Southern		 D2 Larry Hubatka
(3.51) 		Bryan Newsome
(3.64)
David Bentley
(3.66) 		W 6-4
6-3		 S 3.52
09/13/2021 D3 Combo
7.5
CJones/RSankaran (Life Time)
Southern		 L KFranks (PPRSC)
Southern
Rajesh Sankaran (3.39) 6-2
3-6
1-0		 Rod Wilkes (3.13)
Andrew Ross (-----)
Match: S Rating: -----
08/23/2021 D3 Combo
7.5
CJones/RSankaran (Life Time)
Southern		 L PSofarelli (Weddington)
Southern
David Joo (2.99) 7-5
6-4		 Mark Miller (3.88)
Francis Dantino (3.31)
Match: 3.80 Rating: -----
08/09/2021 D3 Combo
7.5
CJones/RSankaran (Life Time)
Southern		 L KFranks (PPRSC)
Southern
German Echeverri (3.07) 5-7
7-6
1-0		 Chris McIver (-----)
Brian Conlon (-----)
Match: S Rating: -----
08/03/2021 D2 Mixed 18+
8.0
DJoo (Life Time)
Southern		 L MZiewacz/JZiewacz (OPRC)
Southern
Cindi Helms (3.61) 7-6
6-2		 Michelle Ziewacz (3.37)
Stephen Woodall (4.05)
Match: 3.54 Rating: 3.53
07/20/2021 D2 Mixed 18+
8.0
DJoo (Life Time)
Southern		 L MAlexander/RMaddle (Mountainbrook)
Southern
Trista Holwager (3.47) 6-4
6-2		 Randall Maddle (3.95)
Fumiyo Ono (3.50)
Match: 3.55 Rating: 3.53
07/13/2021 D2 Mixed 18+
8.0
DJoo (Life Time)
Southern		 L DPagano (Life Time)
Southern
Cecilia Drake (3.67) 4-6
7-5
1-0		 Amy Redfield (4.03)
Andrew VanDerveer (3.45)
Match: S Rating: 3.52
07/06/2021 D1M Flex Format
8.5
RGum (Life Time)
Southern		 L JZhang (Bridgehampton); 1-2 Punch
Southern
Andrew VanDerveer (3.48) 6-3
6-3		 Jim Zhang (3.94)
Nigel Zheng (3.27)
Match: 3.46 Rating: -----
06/29/2021 D3 Mixed 18+
8.0
DJoo (Life Time)
Southern		 W MAhern (Palisades)
Southern
Cecilia Drake (3.62) 6-3
6-4		 Meaghan Ahern (3.62)
Geoff Rhodes (3.55)
Match: S Rating: 3.52
06/26/2021 D1M Flex Format
8.5
RGum (Life Time)
Southern		 L DBrantmeyer (Pine Lake)
Southern
Andrew VanDerveer (3.48) 7-6
6-2		 Dan Brantmeyer (3.90)
Joseph Clarke (3.79)
Match: 3.76 Rating: -----
06/15/2021 D2 Mixed 18+
8.0
DJoo (Life Time)
Southern		 L JBarnes/DMangan (Queens)
Southern
Trista Holwager (3.47) 6-4
7-5		 Brandon Thio (3.56)
Catherine Bryant (3.64)
Match: S Rating: 3.52
06/12/2021 D1M Flex Format
8.5
RGum (Life Time)
Southern		 W KSwain (Queens)
Southern
Roger Gum (3.41) 6-0
6-0		 Krishna Swain (3.01)
Tanmay Jain (-----)
Match: S Rating: -----
06/05/2021 D1M Flex Format
8.5
RGum (Life Time)
Southern		 L DNunn (Foxcroft East)
Southern
Roger Gum (3.41) 7-6
6-2		 Richard Schanzlin (3.73)
Frank Fisher (-----)
Match: S Rating: -----
06/01/2021 D1 Adult 40+
4.0
BMoran (Life Time)
Southern		 L TYoung/GPawlush (Weddington)
Southern
Roger Gum (3.41) 7-6
7-5		 Patrick Murchison (3.68)
Scott Waldrop (3.59)
Match: 3.60 Rating: 3.54
05/18/2021 D1 Adult 40+
4.0
BMoran (Life Time)
Southern		 L BChandra/EStokkebye (Charlotte Indoor)
Southern
William Krueger (3.63) 6-1
6-1		 Kibbee Reese (3.73)
Jeffrey Trivette (3.68)
Match: 3.26 Rating: 3.47
05/12/2021 D1 Adult 40+
4.0
BMoran (Life Time)
Southern		 L PDwyer (Carmel)
Southern
Brian Moran (3.62) 6-2
6-3		 James Nichols (3.82)
David Grindstaff (3.53)
Match: 3.41 Rating: 3.51
04/27/2021 D1 Adult 40+
4.0
BMoran (Life Time)
Southern		 W DWatson (Queens)
Southern
William Krueger (3.60) 4-6
6-1
1-0		 Kyle Johnson (3.58)
ROB SAPPENFIELD (3.53)
Match: 3.63 Rating: 3.52
04/20/2021 D1 Adult 40+
4.0
BMoran (Life Time)
Southern		 W KMiller (Weddington)
Southern
William Krueger (3.56) 7-5
4-6
1-0		 Bill Brupbacher (3.52)
kevin conway (3.85)
Match: 3.68 Rating: 3.52
04/13/2021 D2 Adult 40+
4.0
BMoran (Life Time)
Southern		 W JMarks (Providence CC)
Southern
Dimitrijus Sazinas (3.69) 6-4
4-6
1-0		 Brian Cook (3.61)
James Seward (3.92)
Match: 3.66 Rating: 3.49
03/30/2021 D1 Adult 40+
4.0
BMoran (Life Time)
Southern		 L RGogate (Blakeney)
Southern
Biju Nair (3.46) 6-1
6-2		 Andrew Hocek (3.52)
Krishna Mathis (3.59)
Match: 3.25 Rating: 3.43
03/23/2021 D2 Adult 40+
4.0
BMoran (Life Time)
Southern		 L CSwaminathan (Blakeney )
Southern
Larry Hubatka (3.80) 6-2
6-1		 Chandrasekar Swaminathan (3.88)
Hakan Pehrsson (-----)
Match: S Rating: 3.52
03/16/2021 D3 Adult 40+
4.0
BMoran (Life Time)
Southern		 W MKnowles/MSansotta (Weddington)
Southern
Dimitrijus Sazinas (-----) 6-1
6-2		 Simas Petrikis (-----)
Mark Knowles (3.50)
Match: S Rating: 3.52
03/09/2021 D2 Adult 40+
4.0
BMoran (Life Time)
Southern		 W RBombien (Mountainbrook)
Southern
Larry Hubatka (3.51) 6-4
6-3		 Bryan Newsome (3.64)
David Bentley (3.66)
Match: S 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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