One rules library, many sports.
Choose a sport, then browse its rules by the kind of question you need to answer: setup, scoring, enforcement, procedure, or a live-play decision.
Field and team sports
Rules shaped by possession, contact, scoring, restarts, and team structure.
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Football / Soccer
Offside, handball, fouls, cards, DOGSO, VAR, and the decisions that dominate match discussion.
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American Football
Pass interference, catch rules, targeting, roughing, fair catches, kickoffs, and replay-heavy possession calls.
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Cricket
Dismissals, dead ball moments, overthrows, reviews, and the laws that depend on precise wording.
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Rugby Union
Advantage, grounding, rucks, mauls, scrums, lineouts, TMO checks, cards, and foul-play sanctions.
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Rugby League
Tackle counts, play-the-ball, six-again calls, scrums, obstruction, grounding, offside, cards, and video referee decisions.
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Rugby Sevens
Seven-a-side timing, conversions, restarts, yellow cards, substitutions, and common tournament-rule questions.
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Hockey
Offside, icing, goalkeeper interference, penalties, line changes, and the rulings shaped by speed and zone control.
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Baseball
Force plays, tags, obstruction, interference, balks, and the rulings that depend on exact timing.
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Basketball
Traveling, screens, legal guarding position, goaltending, shot-clock logic, and the calls shaped by timing and space.
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Volleyball
Rotations, contacts, libero rules, net faults, center-line questions, and the calls that turn simple rallies into arguments.
Racket and court sports
Serving, scoring, court position, equipment, and point-by-point rulings.
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Tennis
Scoring, lets, line calls, service faults, hindrance, officiating procedure, and the rules that feel simple until the exception matters.
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Pickleball
Kitchen faults, non-volley zone momentum, serving, scoring, and the fast-growing rules questions people search most.
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Padel
Scoring, underhand serves, glass rebounds, fence contact, doubles positioning, and wall-play rulings.
Motorsport
Race control, technical regulations, flags, penalties, and event procedure.