Statistical Analysis and Estimated Tennis Ratings to the 10,000th of a Point
Match History (2015) View Advanced Player Stats
Jack Griffin (Lake Oswego, OR)
Male 		4.5 C
12/31/2024
Estimated Dynamic Rating 4.0307
5/9/2025
Projected Year End Rating ------
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4.5 Rating Meter
Rating Meter
4.0001 - 4.5000
Recent Match History Current Rating History
2015 Overall Season
League/Level Total
Matches		 Win Loss Tie WPct Total
Sets		 Win Loss WPct Total
Games		 Win Loss WPct Defaults
Adult 18+ 4.5 3 2 1 0 66.7 9 5 4 55.6 66 34 32 51.5 0
Adult 40+ 4.5 6 4 2 0 66.7 14 8 6 57.1 119 59 60 49.6 0
Adult 55+ 9.0 9 8 1 0 88.9 20 16 4 80.0 161 101 60 62.7 0
Mixed 40+ 9.0 2 2 0 0 100.0 6 4 2 66.7 48 27 21 56.3 0
Total 20 16 4 0 80.0 49 33 16 67.3 394 221 173 56.1 0
Match Date League Team Court Partner Opponent(s) W/L Result Match Rating
10/31/2015 Adult 55+
9.0
Nationals		 LOTC-Cooley
Pacific NW		 D2 Leonard Wofford James Barenkamp

John Barenkamp 		L 6-3
6-4		 ----- -----
10/31/2015 Adult 55+
9.0
Nationals		 LOTC-Cooley
Pacific NW		 D2 Leonard Wofford Arthur Labrador

H Jun Lee 		W 7-6
6-2		 ----- -----
10/30/2015 Adult 55+
9.0
Nationals		 LOTC-Cooley
Pacific NW		 D2 Leonard Wofford Anthony Alessi

Daniel Kreiner 		W 6-4
6-1		 ----- -----
10/22/2015 Adult 55+
9.0		 MPRC-Kabaker
Pacific NW		 D1 Steve Bolstad John Williams

John Helmer III 		W 6-2
2-6
1-0		 ----- -----
10/11/2015 Adult 55+
9.0		 MPRC-Kabaker
Pacific NW		 D1 Steve Bolstad Bill Henderson

Craig Koessler 		W 5-7
6-4
1-0		 ----- -----
07/25/2015 Adult 40+
4.5
Flight		 MPRC-Prince
Pacific NW		 D2 Steve Bolstad Joel Ankeny

bob ornstein 		L 6-2
7-5		 ----- -----
07/19/2015 Adult 55+
9.0
Sectionals		 LOTC-Cooley
Pacific NW		 D2 Leonard Wofford Mike Krummel

Mark Caggiano 		W 6-2
6-2		 ----- -----
07/18/2015 Adult 55+
9.0
Sectionals		 LOTC-Cooley
Pacific NW		 D2 Leonard Wofford Robert Schefter

Wally Morrison 		W 6-2
6-4		 ----- -----
07/17/2015 Adult 55+
9.0
Sectionals		 LOTC-Cooley
Pacific NW		 D2 Leonard Wofford Scott Charlston

Michael Gugliotto 		W 6-1
6-1		 ----- -----
07/16/2015 Adult 55+
9.0
Sectionals		 LOTC-Cooley
Pacific NW		 D2 Leonard Wofford George Kraft

Jeffrey Nomi 		W 6-2
6-2		 ----- -----
07/12/2015 Tournament
M55d		 The Oregon State Tennis Championships Senior Men, Category 2 F Steve Bolstad Cecil Brown

Doug Ditmer 		W 2-6
6-3
6-2		 ----- -----
07/12/2015 Tournament
M50d		 The Oregon State Tennis Championships Senior Men, Category 2 RR Brian Leahy Carlos Garcia

Gary Sackett 		W Def ----- -----
07/11/2015 Adult 40+
4.5		 MPRC-Prince
Pacific NW		 D1 Steve Bolstad Jack Yothers

Daniel Burns 		W 5-7
6-4
1-0		 ----- -----
07/11/2015 Tournament
M55d		 The Oregon State Tennis Championships Senior Men, Category 2 S Steve Bolstad Brian Fraim

Kim Jow 		W 6-2
6-1		 ----- -----
07/11/2015 Tournament
M50d		 The Oregon State Tennis Championships Senior Men, Category 2 RR Brian Leahy James Graber

Bruce Levelle 		W 2-6
6-3
6-2		 ----- -----
07/10/2015 Tournament
M50d		 The Oregon State Tennis Championships Senior Men, Category 2 RR Brian Leahy Jeff Ray

Robert Simmons 		L 6-2
6-3		 ----- -----
06/19/2015 Adult 40+
4.5		 MPRC-Prince
Pacific NW		 D1 Josiah Whitman Eric Peterson

Scott Erickson 		L 7-5
6-1		 ----- -----
06/14/2015 Mixed 40+
9.0		 MPRC-McNairy
Pacific NW		 D2 Julie Bryan Maack Steve Bidwell

Lisa Hanna 		W 6-7
6-2
1-0		 ----- -----
06/07/2015 Mixed 40+
9.0		 MPRC-McNairy
Pacific NW		 D1 Julie Bryan Maack Frank Collie

Deborah Borchers 		W 6-7
7-5
1-0		 ----- -----
06/06/2015 Adult 40+
4.5		 MPRC-Prince
Pacific NW		 D2 Brian Ruffner Ken McGair

Robert Prall 		W 6-0
6-4		 ----- -----
05/17/2015 Adult 40+
4.5		 MPRC-Prince
Pacific NW		 D2 Steve Bolstad Quang Pham

John Ezelle 		W 2-6
6-3
1-0		 ----- -----
05/03/2015 Adult 40+
4.5		 MPRC-Prince
Pacific NW		 D2 Charlie Dolezal Gregg Sashkin

Jim Pearson 		W 7-6
6-4		 ----- -----
02/22/2015 Adult 18+
4.5		 MPRC-Abel
Pacific NW		 D1 Kent Lewis Brian Posewitz

Thomas Bode 		L 6-4
5-7
1-0		 ----- -----
02/08/2015 Adult 18+
4.5		 MPRC-Abel
Pacific NW		 D1 Brian Ruffner Kevin Vedder

Lance Berkey 		W 2-6
6-1
1-0		 ----- -----
01/10/2015 Adult 18+
4.5		 MPRC-Abel
Pacific NW		 D1 Brian Ruffner Jimmy Shen

Trenton Corvino 		W 7-6
6-7
1-0		 ----- -----
10/31/2015 D2 Adult 55+
9.0
Nationals
LOTC-Cooley
Pacific NW		 L STL-Lesko/Kinsella
Missouri Valley
Leonard Wofford () 6-3
6-4		 James Barenkamp
John Barenkamp
Match: ----- Rating: -----
10/31/2015 D2 Adult 55+
9.0
Nationals
LOTC-Cooley
Pacific NW		 W CUESTA TC 55AM9.0A
No California
Leonard Wofford () 7-6
6-2		 Arthur Labrador
H Jun Lee
Match: ----- Rating: -----
10/30/2015 D2 Adult 55+
9.0
Nationals
LOTC-Cooley
Pacific NW		 W New England;Bass River;Beaton
New England
Leonard Wofford () 6-4
6-1		 Anthony Alessi
Daniel Kreiner
Match: ----- Rating: -----
10/22/2015 D1 Adult 55+
9.0
MPRC-Kabaker
Pacific NW		 W MAC-Williams
Pacific NW
Steve Bolstad () 6-2
2-6
1-0		 John Williams
John Helmer III
Match: ----- Rating: -----
10/11/2015 D1 Adult 55+
9.0
MPRC-Kabaker
Pacific NW		 W MAC-Williams
Pacific NW
Steve Bolstad () 5-7
6-4
1-0		 Bill Henderson
Craig Koessler
Match: ----- Rating: -----
07/25/2015 D2 Adult 40+
4.5
Flight
MPRC-Prince
Pacific NW		 L IRV-Hendrickson
Pacific NW
Steve Bolstad () 6-2
7-5		 Joel Ankeny
bob ornstein
Match: ----- Rating: -----
07/19/2015 D2 Adult 55+
9.0
Sectionals
LOTC-Cooley
Pacific NW		 W CP-Caggiano
Pacific NW
Leonard Wofford () 6-2
6-2		 Mike Krummel
Mark Caggiano
Match: ----- Rating: -----
07/18/2015 D2 Adult 55+
9.0
Sectionals
LOTC-Cooley
Pacific NW		 W YTC-Morrison
Pacific NW
Leonard Wofford () 6-2
6-4		 Robert Schefter
Wally Morrison
Match: ----- Rating: -----
07/17/2015 D2 Adult 55+
9.0
Sectionals
LOTC-Cooley
Pacific NW		 W LRC Larson
Pacific NW
Leonard Wofford () 6-1
6-1		 Scott Charlston
Michael Gugliotto
Match: ----- Rating: -----
07/16/2015 D2 Adult 55+
9.0
Sectionals
LOTC-Cooley
Pacific NW		 W MI-Dawson
Pacific NW
Leonard Wofford () 6-2
6-2		 George Kraft
Jeffrey Nomi
Match: ----- Rating: -----
The Oregon State Tennis Championships Senior Men, Category 2
07/12/2015 F Tournament
M55d
W
Steve Bolstad 2-6
6-3
6-2		 Cecil Brown
Doug Ditmer
Match: ----- Rating: -----
The Oregon State Tennis Championships Senior Men, Category 2
07/12/2015 RR Tournament
M50d
W
Brian Leahy Def Carlos Garcia
Gary Sackett
Match: ----- Rating: -----
07/11/2015 D1 Adult 40+
4.5
MPRC-Prince
Pacific NW		 W CGM-Jackson/Baker
Pacific NW
Steve Bolstad () 5-7
6-4
1-0		 Jack Yothers
Daniel Burns
Match: ----- Rating: -----
The Oregon State Tennis Championships Senior Men, Category 2
07/11/2015 S Tournament
M55d
W
Steve Bolstad 6-2
6-1		 Brian Fraim
Kim Jow
Match: ----- Rating: -----
The Oregon State Tennis Championships Senior Men, Category 2
07/11/2015 RR Tournament
M50d
W
Brian Leahy 2-6
6-3
6-2		 James Graber
Bruce Levelle
Match: ----- Rating: -----
The Oregon State Tennis Championships Senior Men, Category 2
07/10/2015 RR Tournament
M50d
L
Brian Leahy 6-2
6-3		 Jeff Ray
Robert Simmons
Match: ----- Rating: -----
06/19/2015 D1 Adult 40+
4.5
MPRC-Prince
Pacific NW		 L SAC-Garcia
Pacific NW
Josiah Whitman () 7-5
6-1		 Eric Peterson
Scott Erickson
Match: ----- Rating: -----
06/14/2015 D2 Mixed 40+
9.0
MPRC-McNairy
Pacific NW		 W CRRC-Herkamp
Pacific NW
Julie Bryan Maack 6-7
6-2
1-0		 Steve Bidwell
Lisa Hanna
Match: ----- Rating: -----
06/07/2015 D1 Mixed 40+
9.0
MPRC-McNairy
Pacific NW		 W WHRC-Garakani
Pacific NW
Julie Bryan Maack 6-7
7-5
1-0		 Frank Collie
Deborah Borchers
Match: ----- Rating: -----
06/06/2015 D2 Adult 40+
4.5
MPRC-Prince
Pacific NW		 W MAC-McGair
Pacific NW
Brian Ruffner () 6-0
6-4		 Ken McGair
Robert Prall
Match: ----- Rating: -----
05/17/2015 D2 Adult 40+
4.5
MPRC-Prince
Pacific NW		 W CAC-McKay
Pacific NW
Steve Bolstad () 2-6
6-3
1-0		 Quang Pham
John Ezelle
Match: ----- Rating: -----
05/03/2015 D2 Adult 40+
4.5
MPRC-Prince
Pacific NW		 W SHC-Priem
Pacific NW
Charlie Dolezal () 7-6
6-4		 Gregg Sashkin
Jim Pearson
Match: ----- Rating: -----
02/22/2015 D1 Adult 18+
4.5
MPRC-Abel
Pacific NW		 L MAC-McGair
Pacific NW
Kent Lewis () 6-4
5-7
1-0		 Brian Posewitz
Thomas Bode
Match: ----- Rating: -----
02/08/2015 D1 Adult 18+
4.5
MPRC-Abel
Pacific NW		 W CHARB-Crowley
Pacific NW
Brian Ruffner () 2-6
6-1
1-0		 Kevin Vedder
Lance Berkey
Match: ----- Rating: -----
01/10/2015 D1 Adult 18+
4.5
MPRC-Abel
Pacific NW		 W St.J-Paccione/Corvino
Pacific NW
Brian Ruffner () 7-6
6-7
1-0		 Jimmy Shen
Trenton Corvino
Match: ----- Rating: -----
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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