There are many ways to get batters out, and runners can also be gotten out. Some common ways to get batters out are catching a batted ball in the air, whether in fair or foul territory, throwing the ball to the defensive player at first base (an out if it gets there before the batter), and a strikeout. A runner can be put out by tagging the runner while the runner is not on a base, and by "forcing him out" (when a base is touched before a player can get there, with no base for the runner to go back to). When the fielding team has put out three of the batting team's players, the "half-inning" is over and the team in the field and the team at bat switch places.