Bowling

Bowling Rules

League bowling rules — scoring, frames, handicaps, foul lines, and lineups for recreational bowling leagues per USBC playing rules.

Based on USBC Playing Rules 10 rules Official baseline

Players

Teams of 3–5

Game

10 frames; series of 3 games

Scoring

Strikes/spares; 300 perfect

Handicap

% of (basis − average)

Field & Equipment 1

Balls

Max 16 lbs; USBC-approved; no altering surface mid-game

Bowling balls may not exceed 16 pounds and must be on the USBC approved list for sanctioned play; altering ball surface during a game is illegal.

USBC Rule 16

Players & Teams 2

Handicap

Typically 90% of (basis score − average)

League handicaps level teams: commonly 90% of the difference between a basis score (e.g., 220) and the bowler’s average, recalculated as averages update.

USBC Rule 100e

Lineups & Absentees

Absentee/vacancy scores per league rules

Leagues define absentee scores (bowler average − 10 is common) and vacancy scores so short-handed teams still compete. Substitutes bowl with their own average or the league sub rule.

Game Format 2

Frames & Games

10 frames; 2 balls per frame (3 in the 10th)

A game is ten frames. Strike = all ten pins on the first ball; spare = the rest on the second. Striking or sparing the tenth frame earns bonus ball(s).

USBC Rule 2

Pre/Post Bowling

Allowed with notice for missed weeks

Most leagues permit pre-bowling scores for planned absences with captain/secretary notice; unannounced misses fall to absentee scores.

Gameplay 2

Foul Line

Crossing = 0 on that ball; pins reset if first ball

Touching or crossing the foul line at delivery scores zero for that ball. On a first-ball foul, all ten pins are reset for the second ball (max spare score of 10).

USBC Rule 5

Legal Pinfall

Pins knocked by ball/pins count; kickback rebounds count

Pins toppled by the ball or other pins (including off the kickbacks) count. Pins knocked over by a ball leaving the gutter or by the pinsetter do not — request a re-rack.

USBC Rule 6

Scoring 2

League Points

Per-game + series points (e.g., 2-2-2-2)

Match points are typically awarded per game won plus a series point — e.g., two points per game and two for total pins, handicap included.

Scoring

Strike = 10 + next 2 balls; spare = 10 + next ball

A strike scores ten plus your next two deliveries; a spare scores ten plus the next one. Twelve consecutive strikes is a perfect 300.

USBC Rule 3

Conduct & Safety 1

Lane Courtesy

Yield to the bowler on your right; one lane each side

When adjacent bowlers are up simultaneously, the bowler on the right goes first. Stay off the approach until it’s your turn.

Your league may vary

These are the recreational baselines. Leagues on UnderDraft publish their own rule sets — players see exactly which variations apply before every game, and referees enforce them from the sideline.

Rules for other sports

Soccer rules Basketball rules Volleyball rules Softball rules Baseball rules Kickball rules Flag Football rules Tennis rules Pickleball rules Cornhole rules Golf rules

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