Statistical Analysis and Estimated Tennis Ratings to the 10,000th of a Point
Match History (Recent) View Advanced Player Stats
Stefano Maffini (Haiku, HI)
Male 		3.5 C
12/31/2024
Estimated Dynamic Rating 3.4884
6/5/2025
Projected Year End Rating ------
----------
3.5 Rating Meter
Rating Meter
3.0001 - 3.5000
Recent Match History Current Rating History
Recent History
League/Level Total
Matches		 Win Loss Tie WPct Total
Sets		 Win Loss WPct Total
Games		 Win Loss WPct Defaults
Adult 18+ 3.5 8 8 0 0 100.0 19 16 3 84.2 133 94 39 70.7 1
Adult 40+ 3.5 10 7 3 0 70.0 24 16 8 66.7 184 105 79 57.1 0
Adult 40+ 4.0 4 0 4 0 0.0 8 0 8 0.0 53 5 48 9.4 1
Flex Format 7.0 5 4 1 0 80.0 10 8 2 80.0 89 54 35 60.7 0
Mixed 18+ 7.0 7 3 4 0 42.9 16 8 8 50.0 147 74 73 50.3 0
Total 34 22 12 0 64.7 77 48 29 62.3 606 332 274 54.8 2
Match Date League Team Court Partner Opponent(s) W/L Result Match Rating
06/01/2025 Adult 18+
3.5		 The Legend & Friends
Hawaii		 S1 Steve Ulene
(3.09) 		W 6-1
6-1		 3.48 3.49
05/26/2025 Adult 40+
3.5
Sectionals		 3.5 Men Mike's #1
Hawaii		 S1 Julio Polo
(3.44) 		W 7-6
5-7
1-0		 3.44 3.48
05/25/2025 Adult 40+
3.5
Sectionals		 3.5 Men Mike's #1
Hawaii		 D2 Jonathan Yudis
(3.46) 		Mac Rivera
(3.39)
Mark Chun
(3.38) 		L 6-3
1-6
1-0		 3.45 3.47
05/25/2025 Adult 40+
3.5
Sectionals		 3.5 Men Mike's #1
Hawaii		 S1 Thomas Coulson
(3.45) 		W 6-1
7-5		 3.66 3.52
05/24/2025 Adult 40+
3.5
Sectionals		 3.5 Men Mike's #1
Hawaii		 D2 David Raatz
(3.06) 		Mark Chun
(3.41)
David Fuselier
(3.35) 		L 6-2
2-6
1-0		 3.53 3.48
04/06/2025 Mixed 18+
7.0		 Wells Gang
Hawaii		 D1 Lore Lee Robello
(3.35) 		Kevin Kato
(3.19)
Julia Kinchen
(3.34) 		W 6-4
7-6		 S 3.47
04/05/2025 Mixed 18+
7.0		 Wells Gang
Hawaii		 D1 Trudi Vierra
(3.39) 		Jonathan Yudis
(3.47)
Tesha Newman
(3.44) 		L 6-3
6-4		 3.35 3.47
03/30/2025 Mixed 18+
7.0		 Wells Gang
Hawaii		 D1 Trudi Vierra
(3.40) 		Gina Teliho
(3.06)
James Simmons
(3.61) 		L 7-5
6-7
1-0		 3.34 3.47
03/29/2025 Mixed 18+
7.0		 Wells Gang
Hawaii		 D1 Trudi Vierra
(3.47) 		Bruce Coelho
(3.42)
Shara Wolfe
(3.49) 		L 6-7
6-3
1-0		 3.42 3.49
03/23/2025 Mixed 18+
7.0		 Wells Gang
Hawaii		 D1 Trudi Vierra
(3.39) 		Emily Collins
(3.95)
Morel Nones
(3.04) 		W 6-4
6-1		 3.77 3.53
03/22/2025 Mixed 18+
7.0		 Wells Gang
Hawaii		 D2 Clarita Balala
(3.30) 		Jonathan Lau
(3.04)
Nan Li
(3.04) 		W 6-4
6-3		 3.28 3.45
03/09/2025 Mixed 18+
7.0		 Wells Gang
Hawaii		 D1 Trudi Vierra
(3.39) 		justin prouty
(-----)
Kimber Hoang-Street
(3.97) 		L 6-4
6-4		 S 3.49
02/23/2025 Adult 40+
4.0		 Mike's 4.0 Men
Hawaii		 D4 Jeff Bettendorf
(3.49) 		Benjamin Falit
(3.68)
Emerson Timmins
(3.50) 		L 6-0
6-1		 3.15 3.43
02/22/2025 Adult 40+
3.5		 3.5 Men Mike's #1
Hawaii		 D2 David Raatz
(3.02) 		Gordie Brown
(3.28)
Alton Watanabe
(3.49) 		L 6-2
6-3		 3.38 3.48
02/15/2025 Adult 40+
4.0		 Mike's 4.0 Men
Hawaii		 D4 Tom Keirnes
(3.52) 		Richard Kaitz
(3.73)
Kevin Hillman
(3.93) 		L 6-1
6-1		 3.43 3.49
02/08/2025 Adult 40+
3.5		 3.5 Men Mike's #1
Hawaii		 D3 David Raatz
(3.06) 		Gerald Kalua
(2.99)
Steve Ulene
(3.03) 		W 6-4
6-3		 3.39 3.49
02/02/2025 Adult 40+
3.5		 3.5 Men Mike's #1
Hawaii		 D1 James Simmons
(3.46) 		James Bauer
(3.46)
David Marcus
(3.48) 		W 2-6
6-2
1-0		 3.53 3.51
02/01/2025 Adult 40+
4.0		 Mike's 4.0 Men
Hawaii		 S1 Kevin Hillman
(3.92) 		L 6-1
6-0		 3.46 3.51
01/19/2025 Adult 40+
3.5		 3.5 Men Mike's #1
Hawaii		 D3 Jonathan Lau
(2.98) 		Milton Matsuoka
(2.79)
Steve Ulene
(3.03) 		W 6-3
6-3		 3.36 3.51
01/18/2025 Adult 40+
4.0		 Mike's 4.0 Men
Hawaii		 D3 Bruce Coelho
(3.59) 		Richard Kaitz
(3.68)
Matson Kelley
(3.53) 		L 6-1
6-0		 3.17 3.49
01/12/2025 Adult 40+
4.0		 Mike's 4.0 Men
Hawaii		 D4 Tom Keirnes
(-----) 		Default W 6-0
6-0		 ----- -----
01/11/2025 Adult 40+
3.5		 3.5 Men Mike's #1
Hawaii		 D1 Bruce Coelho
(3.55) 		James Bauer
(3.44)
David Marcus
(3.50) 		W 6-3
6-2		 3.71 3.57
01/05/2025 Adult 40+
3.5		 3.5 Men Mike's #1
Hawaii		 D1 Bruce Coelho
(3.50) 		Stephen Slater
(3.46)
Alton Watanabe
(3.50) 		W 6-2
6-3		 3.72 3.53
11/13/2024 Flex Format
7.0		 Bagels and Socks
Hawaii		 D1M Brad Morris
(3.39) 		David Marcus
(3.54)
Zachary Ricardos
(3.01) 		W 6-3
7-6		 3.42 -----
11/10/2024 Flex Format
7.0		 Bagels and Socks
Hawaii		 D1M James Angell
(3.05) 		Eugene Uclaray
(2.78)
David Marcus
(3.58) 		L 6-1
6-4		 3.16 -----
11/07/2024 Flex Format
7.0		 Bagels and Socks
Hawaii		 D1M James Angell
(3.05) 		justin prouty
(-----)
Robert Zimmerman
(3.16) 		W 6-4
6-2		 S -----
10/06/2024 Flex Format
7.0		 Bagels and Socks
Hawaii		 D1F James Angell
(3.05) 		Donald Chaikin
(3.03)
Stephen Slater
(3.46) 		W 6-3
6-0		 3.80 -----
10/05/2024 Flex Format
7.0		 Bagels and Socks
Hawaii		 D1M Emerson Timmins
(3.52) 		James Bauer
(-----)
Paul Dunn
(-----) 		W 6-1
6-4		 S -----
08/18/2024 Adult 18+
3.5
Sectionals		 Balls to the Wall
Hawaii		 S1 Robert Tokunaga
(3.12) 		W 6-1
6-1		 3.51 3.38
08/17/2024 Adult 18+
3.5
Sectionals		 Balls to the Wall
Hawaii		 S2 Default W 6-0
6-0		 ----- -----
08/17/2024 Adult 18+
3.5
Sectionals		 Balls to the Wall
Hawaii		 S1 Robert Tokunaga
(3.10) 		W 6-2
6-3		 3.34 3.35
08/16/2024 Adult 18+
3.5
Sectionals		 Balls to the Wall
Hawaii		 S1 James Drescher
(3.02) 		W 6-1
6-1		 3.40 3.36
07/13/2024 Adult 18+
3.5		 Balls to the Wall
Hawaii		 D1 Emerson Timmins
(3.59) 		Wayne Feike
(3.37)
Chris Morakis
(3.19) 		W 6-2
3-6
1-0		 3.23 3.32
06/29/2024 Adult 18+
3.5		 Balls to the Wall
Hawaii		 S1 Edgar Cordero
(3.50) 		W 6-1
4-6
1-0		 3.62 3.38
06/16/2024 Adult 18+
3.5		 Balls to the Wall
Hawaii		 D3 Francisco Ramos-Ballester
(3.69) 		Robert Zimmerman
(3.11)
Stephen Slater
(3.54) 		W 6-1
6-2		 3.47 3.35
06/15/2024 Adult 18+
3.5		 Balls to the Wall
Hawaii		 D1 Paulo Mallari
(3.58) 		Wayne Feike
(3.38)
Chris Morakis
(3.19) 		W 6-3
6-7
1-0		 3.22 3.30
06/01/2025 S1 Adult 18+
3.5
The Legend & Friends
Hawaii		 W Mike's 3.5 Men #1
Hawaii
6-1
6-1		 Steve Ulene (3.09)
Match: 3.48 Rating: 3.49
05/26/2025 S1 Adult 40+
3.5
Sectionals
3.5 Men Mike's #1
Hawaii		 W OC Dolphins
Hawaii
7-6
5-7
1-0		 Julio Polo (3.44)
Match: 3.44 Rating: 3.48
05/25/2025 D2 Adult 40+
3.5
Sectionals
3.5 Men Mike's #1
Hawaii		 L Dean's Team
Hawaii
Jonathan Yudis (3.46) 6-3
1-6
1-0		 Mac Rivera (3.39)
Mark Chun (3.38)
Match: 3.45 Rating: 3.47
05/25/2025 S1 Adult 40+
3.5
Sectionals
3.5 Men Mike's #1
Hawaii		 W OC Dolphins
Hawaii
6-1
7-5		 Thomas Coulson (3.45)
Match: 3.66 Rating: 3.52
05/24/2025 D2 Adult 40+
3.5
Sectionals
3.5 Men Mike's #1
Hawaii		 L Dean's Team
Hawaii
David Raatz (3.06) 6-2
2-6
1-0		 Mark Chun (3.41)
David Fuselier (3.35)
Match: 3.53 Rating: 3.48
04/06/2025 D1 Mixed 18+
7.0
Wells Gang
Hawaii		 W Mike 7.0-2
Hawaii
Lore Lee Robello (3.35) 6-4
7-6		 Kevin Kato (3.19)
Julia Kinchen (3.34)
Match: S Rating: 3.47
04/05/2025 D1 Mixed 18+
7.0
Wells Gang
Hawaii		 L Super Torta
Hawaii
Trudi Vierra (3.39) 6-3
6-4		 Jonathan Yudis (3.47)
Tesha Newman (3.44)
Match: 3.35 Rating: 3.47
03/30/2025 D1 Mixed 18+
7.0
Wells Gang
Hawaii		 L Maui Country Club
Hawaii
Trudi Vierra (3.40) 7-5
6-7
1-0		 Gina Teliho (3.06)
James Simmons (3.61)
Match: 3.34 Rating: 3.47
03/29/2025 D1 Mixed 18+
7.0
Wells Gang
Hawaii		 L Mike 7.0-1
Hawaii
Trudi Vierra (3.47) 6-7
6-3
1-0		 Bruce Coelho (3.42)
Shara Wolfe (3.49)
Match: 3.42 Rating: 3.49
03/23/2025 D1 Mixed 18+
7.0
Wells Gang
Hawaii		 W Super Torta
Hawaii
Trudi Vierra (3.39) 6-4
6-1		 Emily Collins (3.95)
Morel Nones (3.04)
Match: 3.77 Rating: 3.53
03/22/2025 D2 Mixed 18+
7.0
Wells Gang
Hawaii		 W Mike 7.0-2
Hawaii
Clarita Balala (3.30) 6-4
6-3		 Jonathan Lau (3.04)
Nan Li (3.04)
Match: 3.28 Rating: 3.45
03/09/2025 D1 Mixed 18+
7.0
Wells Gang
Hawaii		 L Maui Country Club
Hawaii
Trudi Vierra (3.39) 6-4
6-4		 justin prouty (-----)
Kimber Hoang-Street (3.97)
Match: S Rating: 3.49
02/23/2025 D4 Adult 40+
4.0
Mike's 4.0 Men
Hawaii		 L Uncles Movement
Hawaii
Jeff Bettendorf (3.49) 6-0
6-1		 Benjamin Falit (3.68)
Emerson Timmins (3.50)
Match: 3.15 Rating: 3.43
02/22/2025 D2 Adult 40+
3.5
3.5 Men Mike's #1
Hawaii		 L 3.5 Men Mike's #2
Hawaii
David Raatz (3.02) 6-2
6-3		 Gordie Brown (3.28)
Alton Watanabe (3.49)
Match: 3.38 Rating: 3.48
02/15/2025 D4 Adult 40+
4.0
Mike's 4.0 Men
Hawaii		 L Uncles Movement
Hawaii
Tom Keirnes (3.52) 6-1
6-1		 Richard Kaitz (3.73)
Kevin Hillman (3.93)
Match: 3.43 Rating: 3.49
02/08/2025 D3 Adult 40+
3.5
3.5 Men Mike's #1
Hawaii		 W 3.5 Men Mike's #2
Hawaii
David Raatz (3.06) 6-4
6-3		 Gerald Kalua (2.99)
Steve Ulene (3.03)
Match: 3.39 Rating: 3.49
02/02/2025 D1 Adult 40+
3.5
3.5 Men Mike's #1
Hawaii		 W 3.5 Men Mike's #2
Hawaii
James Simmons (3.46) 2-6
6-2
1-0		 James Bauer (3.46)
David Marcus (3.48)
Match: 3.53 Rating: 3.51
02/01/2025 S1 Adult 40+
4.0
Mike's 4.0 Men
Hawaii		 L Uncles Movement
Hawaii
6-1
6-0		 Kevin Hillman (3.92)
Match: 3.46 Rating: 3.51
01/19/2025 D3 Adult 40+
3.5
3.5 Men Mike's #1
Hawaii		 W 3.5 Men Mike's #2
Hawaii
Jonathan Lau (2.98) 6-3
6-3		 Milton Matsuoka (2.79)
Steve Ulene (3.03)
Match: 3.36 Rating: 3.51
01/18/2025 D3 Adult 40+
4.0
Mike's 4.0 Men
Hawaii		 L Uncles Movement
Hawaii
Bruce Coelho (3.59) 6-1
6-0		 Richard Kaitz (3.68)
Matson Kelley (3.53)
Match: 3.17 Rating: 3.49
01/12/2025 D4 Adult 40+
4.0
Mike's 4.0 Men
Hawaii		 W Uncles Movement
Hawaii
Tom Keirnes (-----) 6-0
6-0		 Default
Match: ----- Rating: -----
01/11/2025 D1 Adult 40+
3.5
3.5 Men Mike's #1
Hawaii		 W 3.5 Men Mike's #2
Hawaii
Bruce Coelho (3.55) 6-3
6-2		 James Bauer (3.44)
David Marcus (3.50)
Match: 3.71 Rating: 3.57
01/05/2025 D1 Adult 40+
3.5
3.5 Men Mike's #1
Hawaii		 W 3.5 Men Mike's #2
Hawaii
Bruce Coelho (3.50) 6-2
6-3		 Stephen Slater (3.46)
Alton Watanabe (3.50)
Match: 3.72 Rating: 3.53
11/13/2024 D1M Flex Format
7.0
Bagels and Socks
Hawaii		 W String Theory
Hawaii
Brad Morris (3.39) 6-3
7-6		 David Marcus (3.54)
Zachary Ricardos (3.01)
Match: 3.42 Rating: -----
11/10/2024 D1M Flex Format
7.0
Bagels and Socks
Hawaii		 L String Theory
Hawaii
James Angell (3.05) 6-1
6-4		 Eugene Uclaray (2.78)
David Marcus (3.58)
Match: 3.16 Rating: -----
11/07/2024 D1M Flex Format
7.0
Bagels and Socks
Hawaii		 W Mike's 7.0-3
Hawaii
James Angell (3.05) 6-4
6-2		 justin prouty (-----)
Robert Zimmerman (3.16)
Match: S Rating: -----
10/06/2024 D1F Flex Format
7.0
Bagels and Socks
Hawaii		 W Mike's 7.0-2
Hawaii
James Angell (3.05) 6-3
6-0		 Donald Chaikin (3.03)
Stephen Slater (3.46)
Match: 3.80 Rating: -----
10/05/2024 D1M Flex Format
7.0
Bagels and Socks
Hawaii		 W Mike's 7.0-1
Hawaii
Emerson Timmins (3.52) 6-1
6-4		 James Bauer (-----)
Paul Dunn (-----)
Match: S Rating: -----
08/18/2024 S1 Adult 18+
3.5
Sectionals
Balls to the Wall
Hawaii		 W Game Set Match Drinks
Hawaii
6-1
6-1		 Robert Tokunaga (3.12)
Match: 3.51 Rating: 3.38
08/17/2024 S2 Adult 18+
3.5
Sectionals
Balls to the Wall
Hawaii		 W Smash Bros
Hawaii
6-0
6-0		 Default
Match: ----- Rating: -----
08/17/2024 S1 Adult 18+
3.5
Sectionals
Balls to the Wall
Hawaii		 W Game Set Match Drinks
Hawaii
6-2
6-3		 Robert Tokunaga (3.10)
Match: 3.34 Rating: 3.35
08/16/2024 S1 Adult 18+
3.5
Sectionals
Balls to the Wall
Hawaii		 W Smash Bros
Hawaii
6-1
6-1		 James Drescher (3.02)
Match: 3.40 Rating: 3.36
07/13/2024 D1 Adult 18+
3.5
Balls to the Wall
Hawaii		 W Win or Walk
Hawaii
Emerson Timmins (3.59) 6-2
3-6
1-0		 Wayne Feike (3.37)
Chris Morakis (3.19)
Match: 3.23 Rating: 3.32
06/29/2024 S1 Adult 18+
3.5
Balls to the Wall
Hawaii		 W Win or Walk
Hawaii
6-1
4-6
1-0		 Edgar Cordero (3.50)
Match: 3.62 Rating: 3.38
06/16/2024 D3 Adult 18+
3.5
Balls to the Wall
Hawaii		 W Win or Walk
Hawaii
Francisco Ramos-Ballester (3.69) 6-1
6-2		 Robert Zimmerman (3.11)
Stephen Slater (3.54)
Match: 3.47 Rating: 3.35
06/15/2024 D1 Adult 18+
3.5
Balls to the Wall
Hawaii		 W Win or Walk
Hawaii
Paulo Mallari (3.58) 6-3
6-7
1-0		 Wayne Feike (3.38)
Chris Morakis (3.19)
Match: 3.22 Rating: 3.30
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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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