noun
regular position; starting position
Used in sports and similar contexts to refer to a player's usual or starting position, as opposed to a substitute or temporary role.
彼は今シーズン、レギュラーポジションを獲得した。
He secured a regular position this season.
レギュラーポジションで試合に出るのが目標です。
My goal is to play in a regular position in the match.