Competitive peak
USBC bowler profile
Leah Mazzoni
Proven Competitor
20-21822
Bowling since 2021
180+ peak
1K games
Lifetime average
154.49
Lifetime games
1381
Highest average
191
Career honors
0
What this profile flair means
Competitive peak aura
The nameplate aura reflects a highest recorded league average of 191.
Proven Competitor
Awarded for at least 1,000 recorded league games.
Honor pins
Pins appear after a recognized 300 game, 800 or 900 series, or 11-in-a-row award.
Milestone marks
These celebrate peak average, career average, recorded games, and accumulated honors separately.
Historical records
League History
USBC records begin in 2021. Sport and challenge conversions are summarized below.
Recent composite averages
Year2026
Type
House
Average183
Games201
Year2026
Type
Sport
Average155
Games68
Year2025
Type
House
Average174
Games256
League averages
2025-2026
League
Rab's Summer Doubles
SeasonS
Average197
Games3
League
Country Pro Shop Juniors
SeasonW
Average187
Games84
League
Rab's Saturday Morning Junior Classic
SeasonW
Average182
Games84
League
Rab's Junior Scholarship Doubles
SeasonW
Average175
Games30
League
Rab's Youth Sport Challenge
Sport
SeasonW
Average165
Games28
League
Rab's Youth Sport Challenge
Sport
SeasonW
Average147
Games40
2024-2025
League
Rab's Junior Scholarship Doubles
SeasonW
Average181
Games60
League
Rab's Saturday Morning Junior Classic
SeasonW
Average178
Games83
League
Country Pro Shop Juniors - Gold
SeasonW
Average172
Games81
League
Rab's Youth Sport Challenge
Sport
SeasonW
Average162
Games40
League
Rab's Youth Sport Challenge
SeasonW
Average154
Games32
2023-2024
League
Rab's Junior Scholarship Doubles
SeasonW
Average177
Games54
League
Rab's Summer Scholarship Teens
SeasonW
Average157
Games18
League
Rab's Saturday Junior Classic
SeasonW
Average155
Games84
League
Country Pro Shop Juniors - Gold
SeasonW
Average155
Games81
League
Rab's Youth Sport Challenge
Sport
SeasonW
Average144
Games28
League
Rab's Youth Sport Challenge
Sport
SeasonW
Average140
Games28
League
Rab's Youth Sport Challenge
Sport
SeasonW
Average123
Games28
Show earlier league averages Hide earlier league averages
2022-2023
League
Rab's Summer Scholarship Teens
SeasonW
Average146
Games30
League
Rab's Junior Scholarship Doubles
SeasonW
Average140
Games48
League
Rab's Saturday Junior Classic
SeasonW
Average132
Games84
League
Rab's Youth Sport Challenge
Sport
SeasonS
Average129
Games28
League
Rab's Youth Sport Challenge
Sport
SeasonW
Average122
Games28
2021-2022
League
Rab's Junior Scholarship Doubles
SeasonS
Average118
Games60
League
Rab's Saturday Junior Classic
SeasonW
Average107
Games82
2020-2021
League
Rab's Junior Scholarship Doubles
SeasonS
Average104
Games60
League
Rab's Saturday Junior Classic
SeasonW
Average83
Games75
Sport conversions
129→141
140→158
144→164
147→168
162→187
165→191
USBC standing
Memberships
AssociationUSBC HQ
StatusCurrent
From2026-08-01
Through2027-07-31
AssociationIBC Youth HQ
StatusPast
From2025-08-01
Through2026-07-31
AssociationStaten Island USBC
StatusPast
From2025-08-01
Through2026-07-31
AssociationStaten Island USBC
StatusPast
From2025-08-01
Through2026-07-31
AssociationIBC Youth HQ
StatusPast
From2024-08-01
Through2025-07-31
Show earlier memberships Hide earlier memberships
AssociationStaten Island USBC
StatusPast
From2024-08-01
Through2025-07-31
AssociationIBC Youth HQ
StatusPast
From2023-08-01
Through2024-07-31
AssociationStaten Island USBC
StatusPast
From2023-08-01
Through2024-07-31
AssociationStaten Island USBC
StatusPast
From2022-08-01
Through2023-07-31
AssociationStaten Island USBC
StatusPast
From2021-08-01
Through2022-07-31
AssociationStaten Island USBC
StatusPast
From2020-08-01
Through2021-07-31
Career milestones
Honors
0900 series
0800 series
0300 games
011 in a row
Tournament history
Open Championships
Adjusted entering average
165
How it was calculated
The highest sport-adjusted average from the last three bowling seasons is used until 27 Open Championship games are available.
2025/26191 → 165
Your Open Championships average is calculated from your 27 most recent games bowled between 2018 and 2026.
Search historical Open Championships scores.