How the referee checks it
- Decide whether the whole ball crossed the touchline or goal line.
- Identify who last touched it before it went out.
- Choose the restart: throw-in, goal kick, corner kick, kick-off after a goal, or another restart if an offence came first.
- Check the restart procedure: location, ball placement, opponent distance, and legal delivery.
- Once the ball is in play, judge any second touch, foul, handball, or offside from that new phase.