Statistical Analysis and Estimated Tennis Ratings to the 10,000th of a Point
Match History (2023) View Advanced Player Stats
Dirk Koopman (Portland, OR)
Male 		4.5 C
12/31/2023
Estimated Dynamic Rating 4.1882
1/1/2000
Projected Year End Rating ------
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4.5 Rating Meter
Rating Meter
4.0001 - 4.5000
Recent Match History Current Rating History
2023 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 13 8 5 0 61.5 32 19 13 59.4 240 136 104 56.7 0
Total 13 8 5 0 61.5 32 19 13 59.4 240 136 104 56.7 0
Match Date League Team Court Partner Opponent(s) W/L Result Match Rating
10/14/2023 Adult 40+
4.5
Nationals		 N OR-MAC-Nilsson
Pacific NW		 D3 Todd Siegel
(4.25) 		Gary Gulino
(4.30)
Shihas Vamanjoor
(4.52) 		L 6-3
6-3		 4.28 4.37
10/13/2023 Adult 40+
4.5
Nationals		 N OR-MAC-Nilsson
Pacific NW		 D3 Daniel Larsen
(4.31) 		Jeffrey Chale
(4.22)
Paul Schiffman
(4.27) 		W 7-6
2-6
1-0		 4.23 4.37
10/13/2023 Adult 40+
4.5
Nationals		 N OR-MAC-Nilsson
Pacific NW		 D2 Brad Miller
(4.17) 		Sebastian MartinezChristensen
(4.33)
Antonio Necuze
(4.42) 		L 6-4
6-3		 4.36 4.38
08/27/2023 Adult 40+
4.5
Sectionals		 N OR-MAC-Nilsson
Pacific NW		 D3 Daniel Larsen
(4.26) 		Corey Kincaid
(4.30)
Toby Krauel
(4.24) 		W 6-3
6-1		 4.62 4.44
08/26/2023 Adult 40+
4.5
Sectionals		 N OR-MAC-Nilsson
Pacific NW		 D3 Daniel Larsen
(4.27) 		Kevin Gandhi
(4.06)
Roger Anderson
(4.63) 		W 6-7
7-5
1-0		 4.42 4.38
08/25/2023 Adult 40+
4.5
Sectionals		 N OR-MAC-Nilsson
Pacific NW		 D3 Daniel Larsen
(4.27) 		Dylan Cohon
(4.06)
Nick Vikstrom
(4.19) 		L 6-2
1-6
1-0		 S 4.33
06/17/2023 Adult 40+
4.5		 N OR-MAC-Nilsson
Pacific NW		 D2 Benjamin Yang
(4.16) 		Dave Cobban
(3.79)
David Pham
(3.87) 		W 6-7
6-1
1-0		 4.11 4.33
06/09/2023 Adult 40+
4.5		 N OR-MAC-Nilsson
Pacific NW		 D2 Todd Siegel
(4.20) 		Mark Simpson
(4.15)
Christopher Haddon
(4.05) 		W 6-0
6-2		 4.56 4.41
06/04/2023 Adult 40+
4.5		 N OR-MAC-Nilsson
Pacific NW		 D1 Daniel Larsen
(4.25) 		Sherwood Newell
(4.19)
Todd Klindt
(4.09) 		L 3-6
6-2
1-0		 4.14 4.35
05/13/2023 Adult 40+
4.5		 N OR-MAC-Nilsson
Pacific NW		 D1 Daniel Larsen
(4.27) 		Jeroen Swanborn
(4.00)
Brian Dehen
(4.14) 		W 6-3
6-2		 4.36 4.38
04/23/2023 Adult 40+
4.5		 N OR-MAC-Nilsson
Pacific NW		 D2 Todd Siegel
(4.14) 		Mike McNairy
(4.20)
Mitchell Strauss
(4.27) 		L 6-3
5-7
1-0		 4.31 4.37
04/16/2023 Adult 40+
4.5		 N OR-MAC-Nilsson
Pacific NW		 D3 Daniel Larsen
(4.21) 		Toby Krauel
(4.22)
Rudd McGarity
(4.03) 		W 6-3
6-0		 4.54 4.40
04/15/2023 Adult 40+
4.5		 N OR-MAC-Nilsson
Pacific NW		 D2 Benjamin Yang
(4.22) 		Butch Dela Cruz
(3.92)
Steve Vanderploeg
(4.22) 		W 6-2
6-2		 4.43 4.37
10/14/2023 D3 Adult 40+
4.5
Nationals
N OR-MAC-Nilsson
Pacific NW		 L Eastern/Coyle/40&Over4.5M
Eastern
Todd Siegel (4.25) 6-3
6-3		 Gary Gulino (4.30)
Shihas Vamanjoor (4.52)
Match: 4.28 Rating: 4.37
10/13/2023 D3 Adult 40+
4.5
Nationals
N OR-MAC-Nilsson
Pacific NW		 W ZEPHYR COVE 40AM4.5A
No California
Daniel Larsen (4.31) 7-6
2-6
1-0		 Jeffrey Chale (4.22)
Paul Schiffman (4.27)
Match: 4.23 Rating: 4.37
10/13/2023 D2 Adult 40+
4.5
Nationals
N OR-MAC-Nilsson
Pacific NW		 L Florida/Cabane/40&Over4.5M
Florida
Brad Miller (4.17) 6-4
6-3		 Sebastian MartinezChristensen (4.33)
Antonio Necuze (4.42)
Match: 4.36 Rating: 4.38
08/27/2023 D3 Adult 40+
4.5
Sectionals
N OR-MAC-Nilsson
Pacific NW		 W N OR-UP-Krauel
Pacific NW
Daniel Larsen (4.26) 6-3
6-1		 Corey Kincaid (4.30)
Toby Krauel (4.24)
Match: 4.62 Rating: 4.44
08/26/2023 D3 Adult 40+
4.5
Sectionals
N OR-MAC-Nilsson
Pacific NW		 W SWW-TLTC-Wonneberg
Pacific NW
Daniel Larsen (4.27) 6-7
7-5
1-0		 Kevin Gandhi (4.06)
Roger Anderson (4.63)
Match: 4.42 Rating: 4.38
08/25/2023 D3 Adult 40+
4.5
Sectionals
N OR-MAC-Nilsson
Pacific NW		 L NWW-NTC-Dalkin
Pacific NW
Daniel Larsen (4.27) 6-2
1-6
1-0		 Dylan Cohon (4.06)
Nick Vikstrom (4.19)
Match: S Rating: 4.33
06/17/2023 D2 Adult 40+
4.5
N OR-MAC-Nilsson
Pacific NW		 W WHRC-Heller
Pacific NW
Benjamin Yang (4.16) 6-7
6-1
1-0		 Dave Cobban (3.79)
David Pham (3.87)
Match: 4.11 Rating: 4.33
06/09/2023 D2 Adult 40+
4.5
N OR-MAC-Nilsson
Pacific NW		 W MAC-Austin
Pacific NW
Todd Siegel (4.20) 6-0
6-2		 Mark Simpson (4.15)
Christopher Haddon (4.05)
Match: 4.56 Rating: 4.41
06/04/2023 D1 Adult 40+
4.5
N OR-MAC-Nilsson
Pacific NW		 L VTC-McGirk
Pacific NW
Daniel Larsen (4.25) 3-6
6-2
1-0		 Sherwood Newell (4.19)
Todd Klindt (4.09)
Match: 4.14 Rating: 4.35
05/13/2023 D1 Adult 40+
4.5
N OR-MAC-Nilsson
Pacific NW		 W SHC-McCroskey
Pacific NW
Daniel Larsen (4.27) 6-3
6-2		 Jeroen Swanborn (4.00)
Brian Dehen (4.14)
Match: 4.36 Rating: 4.38
04/23/2023 D2 Adult 40+
4.5
N OR-MAC-Nilsson
Pacific NW		 L MPRC-Kabaker
Pacific NW
Todd Siegel (4.14) 6-3
5-7
1-0		 Mike McNairy (4.20)
Mitchell Strauss (4.27)
Match: 4.31 Rating: 4.37
04/16/2023 D3 Adult 40+
4.5
N OR-MAC-Nilsson
Pacific NW		 W N OR-UP-Krauel
Pacific NW
Daniel Larsen (4.21) 6-3
6-0		 Toby Krauel (4.22)
Rudd McGarity (4.03)
Match: 4.54 Rating: 4.40
04/15/2023 D2 Adult 40+
4.5
N OR-MAC-Nilsson
Pacific NW		 W THPRD-Dela Cruz/Zuccari
Pacific NW
Benjamin Yang (4.22) 6-2
6-2		 Butch Dela Cruz (3.92)
Steve Vanderploeg (4.22)
Match: 4.43 Rating: 4.37
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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