An individual player's turn batting or plate appearance is complete when the player reaches base, hits a home run, makes an out, or hits a ball that results in the team's third out, even if it is recorded against a teammate. On rare occasions, a batter may be at the plate when, without the batter's hitting the ball, a third out is recorded against a teammate—for instance, a runner getting caught stealing (tagged out attempting to steal a base). A batter with this sort of incomplete plate appearance starts off the team's next turn batting; any balls or strikes recorded against the batter the previous inning are erased. A runner may circle the bases only once per plate appearance and thus can score at most a single run per batting turn. Once a player has completed a plate appearance, that player may not bat again until the eight other members of the player's team have all taken their turn at bat. The batting order is set before the game begins, and may not be altered except for substitutions. Once a player has been removed for a substitute, that player may not reenter the game. Children's games often have more liberal substitution rules. 
Players attempting to play in MLB often choose not to defect to the United States, because establishing residency in the United States means they must enter the MLB Draft . If they defect to another nation, they can become free agents , allowing them to choose their offer.  The largest contract given to a Cuban defector is outfielder Rusney Castillo 's seven-year contract with the Boston Red Sox , signed in 2014, worth $ million.  First baseman José Dariel Abreu signed a six-year contract worth $68 million with the Chicago White Sox in 2013.  The largest contract given to a pitcher was the $32 million the New York Yankees gave to José Contreras in 2002,  while the Cincinnati Reds signed Aroldis Chapman for $ million in 2010.