batting lineup; batting order
Baseball term for the sequence of batters. Often used in sports news and commentary.
Today's batting lineup has a powerful heart of the order.
The manager rearranged the batting order.
The manager put together a new batting lineup.
The lineup exploded in the ninth inning and they won with a comeback.
The lineup got hits strung together and scored three runs in a row.
Today the lineup went silent and ended the game without scoring.
The coach is trying to rebuild the struggling lineup.
打線 refers to the batting lineup as a whole unit (its overall strength or flow), while 打順 refers to an individual player's specific position within that order.
Compound of 打 (da, 'hitting') and 線 (sen, 'line'), referring to the line of batters.