Sun Yang saga is a search for justice in a heated pool

SINGAPORE - The swirling controversy over Chinese swimmer Sun Yang involves a search for the moral high ground in sport. As usual no one owns it but everyone thinks they are on it. In sport, everyone is always right.

Nations take offence at a rival's bad behaviour on a field but won't censure their own athletes. Clubs heckle footballing divers but protect those in their colours. Righteousness can be blinding.