Leagues
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USBC has data for John M Rosky starting from 2023.
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Sunday Fun (W) - 187 over 9 games
Sunday Early Birds (W) - 185 over 12 games
2023-2024
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Sunday Fun (W) - 197 over 33 games
Sunday Fun II (S) - 196 over 6 games
Fil-AM II (S) - 193 over 24 games
Strikes & Spares (W) - 191 over 24 games
ORTC Mixed Classic (W) - 191 over 83 games
NFL Partytime (W) - 191 over 6 games
J.B. Bowling #2 (W) - 191 over 3 games
Bobbi's Railroaded Express (W) - 187 over 45 games
Storm Fil-AM (W) - 186 over 60 games
Aloha Friday Invitational (W) - 184 over 9 games
Kings & Queens II (S) - 181 over 21 games
Summer Foxes and Hounds (S) - 179 over 27 games
ADG Realty Trios Invitational (W) - 170 over 3 games
2022-2023
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ADG Realty Trios Invitational (W) - 195 over 3 games
Las Vegas Filipino Bowler's Club Summer (S) - 176 over 42 games
Sundowners II (W) - 171 over 42 games
Sport/Challenge average conversions are located at the bottom of the page.
Recent Composite Averages
2025: 187 over 9 games (House)2025: 185 over 12 games (House)
2024: 189 over 317 games (House)
2024: 179 over 27 games (House)
2023: 174 over 87 games (House)