Massive controversy surrounds Paris Olympics swimming: Luke Greenbank stands disqualified, Xu Jiayu a no-show

There is a massive issue surrounding the Paris Olympics' swimming events one after another, starting with China's Xu Jiayu not being seen in the 200 meter backstroke semifinals, followed by Luke Greenbank's disqualification in the fourth heat of the 200m backstroke event. Here's a wrap-up of what went on around one particular swimming event.