BowlerProfiles
Ranking
Premier peak
USBC bowler profile

Gregg G Sietsema

Honors Legend
253-53490 Bowling since 2004
×2 800 series ×7 300 games ×1 11 in a row
230+ peak 200+ career avg 2.5K games 10+ honors
Lifetime average 205.62 Across all recorded seasons
Lifetime games 3817 USBC-recorded games
Highest average 230 30 games
Career honors 10 Recognized achievements
What this profile flair means
Premier peak aura

The nameplate aura reflects a highest recorded league average of 230.

Honors Legend

Awarded for reaching at least 10 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.

Roster matching

League Finder

Start with one bowling center, then expand across the region. Matches use name, average, gender, game count, and league history when available.

Beta
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Choose a region and bowling center to begin.
Historical records

League History

USBC records begin in 2004. Sport and challenge conversions are summarized below.

Recent composite averages

2026 House
199 average · 44 games
2025 House
203 average · 54 games
2022 House
210 average · 24 games
2020 House
208 average · 120 games
2019 House
207 average · 173 games

League averages

2025-2026

Vegas Express · W
199 average · 44 games

2024-2025

Vegas Express · S
203 average · 54 games

2021-2022

Alley Cats / River Rats · W
210 average · 24 games

2019-2020

Vegas Or Bust · W
212 average · 57 games
Vegas Express · W
204 average · 63 games

2018-2019

Vegas Express · W
210 average · 69 games
Vegas Express · S
205 average · 53 games
Vegas Or Bust · S
205 average · 51 games

2017-2018

River Magic · W
203 average · 48 games
River Magic · S
192 average · 51 games

2016-2017

River Magic · W
207 average · 39 games
Aces Or Better · W
202 average · 72 games
Aces Or Better · S
201 average · 60 games
River Magic · S
197 average · 60 games

2015-2016

Hits & Misses · W
220 average · 69 games
Aces Or Better · W
212 average · 75 games
Aces Or Better · S
211 average · 69 games
Hits & Misses · S
210 average · 72 games
River Magic · S
205 average · 66 games
Lg. Of Our Own · W
202 average · 51 games

2014-2015

Lg. Of Our Own · W
224 average · 60 games
Aces Or Better · W
224 average · 69 games
Strike Me Green · W
223 average · 75 games
Lg. Of Our Own · S
222 average · 78 games
Strike Me Green · S
222 average · 45 games
Vegas Holiday · W
219 average · 21 games
Aces Or Better · S
219 average · 75 games

2013-2014

Vegas Holiday · S
230 average · 30 games
Lg. Of Our Own · W
226 average · 15 games
Thurs. Niters · W
222 average · 87 games
Strike Me Green · S
221 average · 81 games
Aces Or Better · S
217 average · 70 games
Hits & Misses · W
215 average · 72 games
Vegas Holiday · W
202 average · 6 games
Guys & Dolls · W
183 average · 6 games

2012-2013

Thurs. Niters · S
208 average · 33 games
Party Down · W
206 average · 83 games
Thurs. Niters · W
204 average · 48 games
Party Down · S
200 average · 27 games

2011-2012

Party Down · W
213 average · 87 games
Thurs. Niters · S
204 average · 54 games
Thurs. Niters · W
203 average · 72 games
Republic Concrete · W
197 average · 3 games
Party Down · S
194 average · 45 games

2010-2011

Thurs. Niters · W
206 average · 60 games
Party Down · S
205 average · 45 games
Party Down · W
205 average · 81 games
Thurs. Niters · S
201 average · 78 games

2009-2010

Party Down · S
205 average · 45 games
Party Down · W
204 average · 82 games
Thurs. Niters · S
203 average · 69 games
Thurs. Niters · W
203 average · 63 games
4 - 4 Vegas · S
194 average · 72 games
4 - 4 Vegas · W
193 average · 69 games

2008-2009

Thurs. Niters · S
Data not found
Party Down · S
Data not found
Party Down · W
200 average · 84 games
Thurs. Niters · W
199 average · 57 games
Sat. Vegas Special · W
191 average · 87 games

2007-2008

Party Down · S
Data not found
Thurs. Niters · S
Data not found
Party Down · W
199 average · 75 games
Double Down · W
197 average · 72 games
Showboaters · S
188 average · 27 games

2006-2007

Party Down · S
Data not found
Double Down · S
Data not found
PBA Experience · S
Data not found
Party Down · W
203 average · 84 games
Double Down · W
190 average · 75 games

2005-2006

Party Down · S
Data not found
Double Down · S
Data not found
Double Down · W
201 average · 75 games

2004-2005

Double Down · S
Data not found
Double Down · W
184 average · 57 games

2003-2004

Double Down · S
Data not found
Double Down · W
186 average · 71 games
USBC standing

Memberships

Not currently active
Citrus Belt USBC Most recent
2025-08-01 — 2026-07-31
Citrus Belt USBC Past
2024-08-01 — 2025-07-31
Orange County USBC Past
2023-08-01 — 2024-07-31
Orange County USBC Past
2021-08-01 — 2022-07-31
Citrus Belt USBC Past
2019-08-01 — 2020-07-31
Orange County USBC Past
2019-08-01 — 2020-07-31
Citrus Belt USBC Past
2018-08-01 — 2019-07-31
Orange County USBC Past
2018-08-01 — 2019-07-31
Orange County USBC Past
2017-08-01 — 2018-07-31
Orange County USBC Past
2016-08-01 — 2017-07-31
Orange County USBC Past
2015-08-01 — 2016-07-31
Orange County USBC Past
2014-08-01 — 2015-07-31
Orange County USBC Past
2013-08-01 — 2014-07-31
Orange County USBC Past
2012-03-15 — 2013-07-31
Orange County USBC Past
2011-03-15 — 2012-07-31
Orange County USBC Past
2010-03-15 — 2011-07-31
Orange County USBC Past
2009-03-15 — 2010-07-31
Orange County USBC Past
2008-08-01 — 2009-07-31
Citrus Belt USBC Past
2007-08-01 — 2008-07-31
Orange County USBC Past
2007-08-01 — 2008-07-31
Orange County USBC Past
2006-03-15 — 2007-07-31
Orange County USBC Past
2005-08-01 — 2006-07-31
San Gabriel Valley BA Past
2004-08-01 — 2005-07-31
Orange Cnty BA Past
2003-08-01 — 2004-07-31
Orange Cnty BA Past
2001-03-15 — 2002-07-31
Career milestones

Honors

0900 series
2800 series
7300 games
111 in a row

800 series

813 series · Tustin Lanes
September 2 2014 · 277-300-236
800 series · Tustin Lanes
March 13 2014 · 257-276-267

300 games

Perfect game · South Point Bowling Center
September 17 2016 · 191-300-216
Perfect game · Tustin Lanes
February 19 2015 · 159-276-300
Perfect game · Tustin Lanes
October 23 2014 · 202-278-300
Perfect game · Tustin Lanes
September 2 2014 · 277-300-236
Perfect game · Tustin Lanes
December 19 2013 · 270-215-300
Perfect game · New Yorba Linda Bowl
December 8 2009 · 300-216-193
Perfect game · Linbrook Bowl
October 27 2007 · 202-300-201

11 in a row

11 consecutive strikes · Bowlero Fullerton
May 7 2005
Tournament history

Open Championships

Adjusted entering average 175 Fewer than 27 recorded Open Championship games

How it was calculated

The highest sport-adjusted average from the last three bowling seasons is used until 27 Open Championship games are available.

2024/25203 → 175

The Open Championships average uses the most recent 27 games bowled from 2016 through 2025. Search historical championship scores.