The revelation that Tang Muhan, a member of China’s world-beating women’s 4X200m relay team, secretly tested positive to a banned steroid nearly two years ago is as welcome as a Polly Waffle in La Défense Arena pool.

But, if you pause to consider without prejudgment the facts we know, this latest scandal should bolster rather than weaken athlete confidence in the anti-doping system.

Tang Muhan (arms........

© The Sydney Morning Herald