OSSO 9 PIN BOWLING LEAGUE RULES
Updated: 01/08/26
General League Information
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A team must have a minimum of 6 players on the roster.
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League games consist of 2 games bowled per night for 7 weeks.
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Games are played in a 9 Pin No Tap format.
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9 Pin No Tap means that knocking down 9 pins on the first roll of a frame counts as a strike.
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In the case of severe weather, official cancellation notices will be sent via email or text between 4:00 pm and 5:00 pm.
Pregame
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Practice bowling begins 10 minutes before game time.
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Be on time.
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All players must be wearing their designated OSSO team uniform.
Scoring and League Rules
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Have fun.
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All bowlers will receive a set average and handicap after the first 2 games bowled.
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This allows experienced and newer bowlers to compete and contribute equally.
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New bowlers do not need to worry about averages or handicaps. Just bowl and have fun.
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Handicap
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Handicap is calculated as 90 percent of a 200 base average for all league members.
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Pre Bowling and Post Bowling
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Games missed may be made up by pre bowling or post bowling one week in advance or one week after.
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All games counting toward a playoff eligible team must be completed by the end of Sunday of week 6.
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Games not completed by this deadline will not count toward championship eligibility.
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Absentee Score
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If a bowler is absent and games are not pre bowled or post bowled, their score will be their average minus 10 pins.
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The established handicap will still apply.
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Vacancy Score
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If a team has fewer than 6 players, a vacancy score of 100 per game will be assigned.
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Team Points
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Teams may earn up to 3 points per week.
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One point is awarded for each game won. Two games per night.
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One point is awarded for total series score with handicap.
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Game points are calculated using all 6 player scores from each team for each game.
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Series points are calculated using the top 6 handicap series totals from each team.
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Championship Week
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Championship week takes place during week 7.
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The top 2 teams after week 6 will compete head to head for the championship.
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Teams in the championship match must have all 6 bowlers present with no vacancies.
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All remaining teams will be matched randomly.
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Bowling Poker
Bowling Poker is an optional side game commonly played during OSSO bowling leagues.
Participation
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Participation is optional.
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Players may want to bring cash if they choose to participate.
Objective
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Score bowling pins to build the best 5 card poker hand by the end of the game.
Setup
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Each player or team starts with no cards.
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Standard poker hand rankings apply.
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Decide before play whether the game is individual based or team based.
How Cards Are Earned
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Cards are drawn randomly from a standard deck.
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Common format:
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Strike: draw 2 cards
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Spare: draw 1 card
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Open frame: no card
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Hand Rules
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Players may hold up to 5 cards.
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If a player earns a card while already holding 5 cards:
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One existing card may be replaced with the new draw.
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Cards may be kept hidden or face up at the player’s discretion.
End of Game
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After the final frame, players form their best 5 card poker hand.
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The best hand wins.
OSSO Code of Conduct
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Lighthearted trash talking is permitted.
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Personal profanity directed at another individual will result in disciplinary action.
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First offense results in a warning.
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A second offense results in ejection.
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Repeat offenses result in suspension.
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Suspension length is determined on a case by case basis.
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Racial slurs, hate speech, or discriminatory language of any kind will result in:
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Immediate ejection
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Complete suspension
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Removal from the league
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This applies to players, spectators, and anyone involved with the game.
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Physical violence of any kind including fighting, shoving, or intentional aggression will result in:
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Immediate ejection
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Complete suspension
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Removal from the league
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This applies to players, spectators, and anyone involved with the game.
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Disputes
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Captains may request a meeting with the opposing Captain and the League Coordinator or Official.
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If a call goes in your team’s favor incorrectly, Captains should speak up to correct it.
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Behavior Toward Officials
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Arguing with or being disrespectful to officials will result in a warning.
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A second offense results in ejection.
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Repeat offenses result in suspension.
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Suspension length is determined on a case by case basis.
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League Values
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OSSO is a social sports league that values fun and community above all else.
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Mistakes and missed calls will happen.
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These should be accepted with grace.
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Our goal is to provide a fun, inclusive, and fair environment for all participants.
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