Premier peak
USBC bowler profile
Dzintars Grinfelds
Decorated Bowler
5495-397
Bowling since 2001
×1
800 series
×6
300 games
×2
11 in a row
230+ peak
200+ career avg
2.5K games
5+ honors
Lifetime average
203.11
Lifetime games
2954
Highest average
230
Career honors
9
What this profile flair means
Premier peak aura
The nameplate aura reflects a highest recorded league average of 230.
Decorated Bowler
Awarded for reaching at least five recognized career honors.
Honor pins
Each pin names a recognized honor and shows how many times it was earned.
Milestone marks
These celebrate peak average, career average, recorded games, and accumulated honors separately.
Historical records
League History
USBC records begin in 2001. Sport and challenge conversions are summarized below.
Recent composite averages
Year2026
Type
House
Average210
Games132
Year2025
Type
House
Average212
Games84
Year2025
Type
Sport
Average185
Games109
League averages
2026-2027
League
Golobic Scratch Winter 2026/2027
SeasonW
Average & games
2025-2026
League
Open Doubles 2025-26
SeasonW
Average & games
League
Golobic Scratch Trios (Winter 2025/26)
SeasonW
Average213
Games90
League
Golobic Scratch Summer 2026
SeasonS
Average205
Games42
2024-2025
League
16 Wild Weeks Fall 2024
SeasonW
Average & games
League
Golobic Scratch Winter 2024/25
SeasonW
Average212
Games84
League
Golden Gate Classic 2024/25 Winter
Sport
SeasonW
Average186
Games69
League
Golden Gate Classic Summer 2025
Sport
SeasonS
Average182
Games40
Show earlier league averages Hide earlier league averages
2023-2024
League
15 Wild Weeks Jubilee
SeasonS
Average & games
League
14 Wild Weeks
SeasonW
Average & games
League
15 Wild Weeks
SeasonW
Average & games
League
Golobic Scratch Classic Winter 2023-24
SeasonW
Average220
Games81
League
Golobic Scratch Summer 2024
SeasonS
Average212
Games30
League
Golden Gate Classic Winter 2023-24
Sport
SeasonW
Average187
Games69
2022-2023
League
15 Wild Weeks(Fall)2022/2023
SeasonW
Average218
Games30
League
16 Wild Weeks Spring 2023
SeasonW
Average215
Games24
League
Golobic Scratch(W)2022/2023
SeasonW
Average214
Games84
League
14 Wild Weeks Summer
SeasonS
Average203
Games21
2021-2022
League
22-23 14 WILD WEEKS
SeasonS
Average230
Games30
League
21-22 Golobic Classic
SeasonW
Average218
Games93
League
14 Wild Weeks (Winter)
SeasonW
Average212
Games34
2020-2021
League
20-21 20 Wild Weeks
SeasonS
Average214
Games51
2019-2020
League
19-20 15 Wild Weeks (Winter)
SeasonW
Average & games
League
Val Valencia Telco
SeasonW
Average206
Games53
2018-2019
League
18-19 14 Wild Weeks (Summer)
SeasonS
Average206
Games18
League
Val Valencia 2018-2019
SeasonW
Average204
Games72
League
18-19 14 Wild Weeks (Winter)
SeasonW
Average204
Games30
2017-2018
League
17-18 14 Wild Weeks (Summer)
SeasonS
Average229
Games30
League
Val Valencia Telco 2017-2018
SeasonW
Average211
Games75
League
17-18 14 Wild Weeks (Spring)
SeasonW
Average206
Games12
League
Serra Vista Jubilee 2018
SeasonS
Average198
Games6
League
Golden Gate Open Summer 2018
Sport
SeasonS
Average173
Games4
2016-2017
League
Val Valencia
SeasonW
Average209
Games63
League
Golden Gate Open Summer 2017
Sport
SeasonS
Average185
Games48
2015-2016
League
Val Valencia
SeasonW
Average208
Games75
2014-2015
League
Val Valencia
SeasonW
Average206
Games23
League
Golden Gate Open
Sport
SeasonW
Average184
Games4
League
Golden Gate Open
Sport
SeasonS
Average179
Games52
2013-2014
League
Golden Gate Open
Sport
SeasonS
Average192
Games36
League
Val Valencia Telco
SeasonW
Average185
Games3
League
Golden Gate Open
Sport
SeasonW
Average179
Games120
2012-2013
League
Val Valencia Telco
SeasonW
Average197
Games24
League
Golden Gate Sport Shot Challenge
Sport
SeasonS
Average189
Games52
League
Golden Gate Open
Sport
SeasonW
Average180
Games88
2011-2012
League
Val Valencia
SeasonW
Average209
Games77
League
Val Valencia Summer
SeasonS
Average207
Games27
League
Scratch Draft
SeasonW
Average206
Games84
League
Golden Gate Inv Team USA Dbls
SeasonW
Average185
Games24
League
Golden Gate Invitational
Sport
SeasonS
Average177
Games36
2010-2011
League
825 Scratch Match Point Summer 2011
SeasonS
Average & games
League
Val Valencia
SeasonS
Average209
Games33
League
Wednesday Niters
SeasonW
Average197
Games65
2009-2010
League
Peninsula Cup 635 Trios 2009
SeasonW
Average & games
League
Scratch Draft 2010
SeasonS
Average195
Games39
2008-2009
League
Jr Gold Pro Challenge Spr (Win 08)/Sea Bowl
SeasonW
Average216
Games30
League
Jr Gold Pro Challenge Winter (Win 08)/Sea Bowl
SeasonW
Average207
Games36
League
Jr Gold Challenge Fall II(Win 08)/Sea Bowl
SeasonW
Average201
Games42
League
Bay Area Jr Travel League Gold(Win 08)/Sea Bowl
SeasonW
Average196
Games30
League
Jr Gold Challenge (Win 08)/Sea Bowl
SeasonW
Average190
Games42
2007-2008
League
Reno Junior Adult
SeasonS
Average & games
League
Bay Area Jr Travel League Gold (Win 07)/Sea Bowl
SeasonW
Average209
Games30
League
Jr. Gold Pro Challenge (Win 07)/Sea Bowl
SeasonW
Average206
Games40
League
Jr. Gold Pro Challenge Win 07-08 (Win 07)/Sea Bowl
SeasonW
Average206
Games36
League
Jr. Gold Pro Challenge Spr 08 (Win 07)/Sea Bowl
SeasonW
Average196
Games24
2006-2007
League
Reno Jr. Adult League/Sea Bowl
SeasonS
Average & games
League
Bay Area Jr Travel Gold (Win 06)/Sea Bowl
SeasonW
Average202
Games24
League
Keith O All Stars (Win 06)/Classic Bowling Center
SeasonW
Average201
Games48
League
Junior Pro Challenge (Win 06)/Sea Bowl
SeasonW
Average198
Games72
2005-2006
League
Reno Junior Adult
SeasonS
Average & games
League
Daly City All Stars (Win 05)/Sea Bowl Entertainmet
SeasonW
Average181
Games39
League
Daly City All Stars Scratch Doubles (Win 05)/Serra
SeasonW
Average181
Games45
2004-2005
League
Bay Area Junior Travel League (Winter 04)/Albany
SeasonW
Average & games
League
Jr Pro Point (Sum 05)/Sea Bowl
SeasonS
Average & games
League
Junior Scratch Invitational (Winter 04)/Serra Bowl
SeasonW
Average182
Games76
2003-2004
League
Reno Jr Adult (Sum 04)/Serra Bowl
SeasonS
Average & games
League
KO Jr.Masters (Winter 03) Classic Bowl
SeasonW
Average167
Games33
2002-2003
League
Reno Junior Adult(Summer)/Serra Bowl
SeasonS
Average & games
League
Jr Scratch/Classic Bowling Center
SeasonW
Average166
Games54
League
NFL Jr Adult/Serra Bowl
SeasonW
Average158
Games36
2001-2002
League
Reno Junior Adult/Serra Bowl
SeasonS
Average & games
League
Homerun Jr Adult League/Sea Bowl
SeasonS
Average & games
2000-2001
League
Kool Kats/Sea Bowl
SeasonS
Average & games
League
Junior - Adult Scholarship League / Serra Bowl
SeasonS
Average & games
League
Classic Rollers/Classic Bowl
SeasonW
Average137
Games72
Sport conversions
173→201
177→205
179→207
180→208
182→211
184→213
185→214
186→215
187→216
189→218
192→221
USBC standing
Memberships
AssociationPeninsula USBC
StatusCurrent
From2026-08-01
Through2027-07-31
AssociationPeninsula USBC
StatusPast
From2025-08-01
Through2026-07-31
AssociationSan Francisco USBC
StatusPast
From2025-08-01
Through2026-07-31
AssociationPeninsula USBC
StatusPast
From2024-08-01
Through2025-07-31
AssociationPeninsula USBC
StatusPast
From2023-08-01
Through2024-07-31
Show earlier memberships Hide earlier memberships
AssociationPeninsula USBC
StatusPast
From2022-08-01
Through2023-07-31
AssociationPeninsula USBC
StatusPast
From2021-08-01
Through2022-07-31
AssociationPeninsula USBC
StatusPast
From2020-08-01
Through2021-07-31
AssociationSan Francisco USBC
StatusPast
From2020-08-01
Through2021-07-31
AssociationPeninsula USBC
StatusPast
From2019-08-01
Through2020-07-31
AssociationPeninsula USBC
StatusPast
From2018-08-01
Through2019-07-31
AssociationSan Francisco USBC
StatusPast
From2018-08-01
Through2019-07-31
AssociationPeninsula USBC
StatusPast
From2017-08-01
Through2018-07-31
AssociationSan Francisco USBC
StatusPast
From2017-08-01
Through2018-07-31
AssociationSan Francisco USBC
StatusPast
From2016-08-01
Through2017-07-31
AssociationSan Francisco USBC
StatusPast
From2015-08-01
Through2016-07-31
AssociationSan Francisco USBC
StatusPast
From2014-08-01
Through2015-07-31
AssociationSan Francisco USBC
StatusPast
From2014-08-01
Through2015-07-31
AssociationSan Francisco USBC
StatusPast
From2013-08-01
Through2014-07-31
AssociationSan Francisco USBC
StatusPast
From2012-08-01
Through2013-07-31
AssociationSan Francisco USBC
StatusPast
From2012-08-01
Through2013-07-31
AssociationSan Francisco USBC
StatusPast
From2011-08-01
Through2012-07-31
AssociationSan Francisco USBC
StatusPast
From2011-03-15
Through2012-07-31
AssociationSanta Cruz USBC
StatusPast
From2010-08-01
Through2011-07-31
AssociationSan Francisco USBC
StatusPast
From2009-08-01
Through2010-07-31
AssociationIBC Youth HQ
StatusPast
From2008-08-01
Through2009-07-31
AssociationNor-Cal USBC Youth
StatusPast
From2008-08-01
Through2009-07-31
AssociationNor-Cal USBC Youth
StatusPast
From2007-08-01
Through2008-07-31
AssociationNor-Cal USBC Youth
StatusPast
From2006-08-01
Through2007-07-31
AssociationNor-Cal USBC Youth
StatusPast
From2005-08-01
Through2006-07-31
AssociationNor-Cal USBC Youth
StatusPast
From2004-03-15
Through2005-07-31
AssociationNor-Cal USBC Youth
StatusPast
From2003-08-01
Through2004-07-31
AssociationNor-Cal USBC Youth
StatusPast
From2002-08-01
Through2003-07-31
AssociationNor-Cal USBC Youth
StatusPast
From2001-08-01
Through2002-07-31
AssociationNor-Cal USBC Youth
StatusPast
From2000-08-01
Through2001-07-31
AssociationNor-Cal USBC Youth
StatusPast
From1999-08-01
Through2000-07-31
Career milestones
Honors
0900 series
1800 series
6300 games
211 in a row
800 series
Series813
Bowling centerSea Bowl
DateFebruary 5 2019
Game scores234300279
300 games
Bowling centerBel Mateo Bowl
DateJune 5 2025
Game scores216231300
Bowling centerClassic Bowling Center
DateFebruary 19 2023
Game scores194300242
Bowling centerSea Bowl
DateFebruary 5 2019
Game scores234300279
Bowling centerSea Bowl
DateJanuary 17 2017
Game scores156211300
Bowling centerCloverleaf Family Bowl
DateMay 30 2010
Game scores30000
Bowling centerDelta Bowl
DateApril 26 2009
Game scores30000
Show earlier 300 games Hide earlier 300 games
Bowling centerBel Mateo Bowl
DateJune 5 2025
Game scores216231300
Bowling centerClassic Bowling Center
DateFebruary 19 2023
Game scores194300242
Bowling centerSea Bowl
DateFebruary 5 2019
Game scores234300279
Bowling centerSea Bowl
DateJanuary 17 2017
Game scores156211300
Bowling centerCloverleaf Family Bowl
DateMay 30 2010
Game scores30000
Bowling centerDelta Bowl
DateApril 26 2009
Game scores30000
11 in a row
Bowling centerNational Bowling Stadium
DateOctober 11 2013
Bowling centerSea Bowl
DateDecember 6 2008
Tournament history
Open Championships
Entering average
177
Your Open Championships average is calculated from your 27 most recent games bowled between 2018 and 2026.
Search historical Open Championships scores.