noun
pitching staff; pitching corps
Baseball term referring to the group of pitchers on a team, often used in sports news and commentary.
今年の投手陣は層が厚い。
This year's pitching staff is deep.
投手陣の再編が急務だ。
Reorganizing the pitching corps is an urgent task.
先発陣 is the starting rotation, a subset of the 投手陣.
Compound of 投手 (pitcher) and 陣 (camp, corps), literally 'pitcher corps'.