The batting order, or batting lineup, in baseball is the sequence in which the nine members of the offense take their turns in batting against the pitcher. The batting order is set by the manager before the game begins (although substitutions may subsequently take place).

How does a baseball lineup work?

The batting order or line-up is the designated order in which the players for a given team will bat. Before the game, each manager provides the head umpire with a list of the players who will be starting the game and the order in which they will bat - the starting line-up, as written on a line-up card.

How many people are in a baseball lineup?

Each team is still allowed to have up to 40 players under major-league contracts, and active rosters are now normally 26 players, with a limited expansion—to 28 players—from September 1 through the end of the regular season.