0 in sport, the fact of playing according to the rules and not having an unfair advantage
1 equal and honest treatment of others, esp. in following accepted rules
This is usually explained as enforcement of "fair play" by the responder.
Light-of-day discussions about such issues would contribute to actual and apparent fairness and would appeal to the public's sense of fair play.
Cooperation among fishermen cannot be sustained unless they are confident of fair play from kadakkodi leaders.
Morally, it evokes deep-seated intuitions about 'fair reciprocity' and the 'duty of fair play'.
With his usual stoicism and sense of fair play he hadn't made a fuss.
Nor are the rules, people, and organizations we entrust to punish infractions and ensure fair play.
They typically derive these reasons from the power to coerce, or the subjects' consent, or the mutual obligations of fair play, or something of that sort.
At its bone, the notion of justice involves equity and fair play.