The basics in 1 minute

The aim

Batters try to become runners and circle the bases, while the defence tries to make outs. Teams alternate batting and fielding.

Scoring

A run normally counts when a runner legally touches every base and home in order. After 3 outs, the batting turn ends. MLB normally plays 9 innings; WBSC event lengths and tie-break procedures vary.

Key rules

• A walk is awarded after 4 balls; 3 strikes normally retire the batter.
• A caught fly ball retires the batter.
• Runners can be put out by a tag or, when forced to advance, a force play.