The first batter in each inning after the first inning shall be the player whose name follows that of the last player who legally completed his time at bat in the preceding inning. A batter has legally completed his time at bat when he is put out or becomes a runner. The Strike Zone shall be determined from the batter's stance as the batter is prepared to swing at a pitched ball. A fair fly shall be judged according to the relative position of the ball and the foul line, including the foul pole, and not as to whether the fielder is on fair or foul territory at the time he touches the ball. If a fly ball lands on or beyond first or third base and then bounces to foul territory, it is a fair hit.
All foul lines are in fair territory.
A runner acquires the right to an unoccupied base when he touches it before he is put out. He is then entitled to it until he is put out, or forced to vacate it for another runner legally entitled to that base. In advancing, a runner shall touch first, second, third and home base in order. If forced to return, he shall retouch all bases in reverse order, unless the ball is dead under any provision of Rule 5.09. In such cases, the runner may go directly to his original base.