noun, noun or participle which takes 'suru'
athlete's oath of fair play
A formal pledge made by a representative athlete at the start of a sports event, promising to compete fairly and uphold the spirit of the competition.
開会式で、キャプテンが選手宣誓を行った。
At the opening ceremony, the captain gave the athlete's oath.
選手宣誓の言葉
The words of the athlete's oath express the spirit of fair play.