Rules and roles for fans and players.
Goalkeeper
Player who can use hands in the penalty area.
Striker
Forward focused on scoring.
Midfielder
Links defense and attack.
Defender
Player primarily preventing goals.
Offside
Attacking position rule limiting goal-hanging.
Corner kick
Restart from the corner after defensive touch out.
Free kick
Restart after a foul.
Penalty kick
Spot kick after a foul in the box.
Yellow card
Caution for misconduct.
Red card
Sending-off for serious offense.
Assist
Pass leading directly to a goal.
Clean sheet
Match with no goals conceded.
Extra time
Additional periods if knockout tied.
VAR
Video assistant referee review system.