Andrew Alderson: ZB Sports on 49er sailors leading in Marseille, Lewis Clareburt's medal hopes

Sailors Isaac McHardie and Will McKenzie are first after the opening day of the men's 49er competition off the Marseille coast. The pair triumphed immediately, before posting a third and an eighth.  Meanwhile, in efforts to snag New Zealand’s first Olympic swimming medal since 1996, Lewis Clareburt faces tough competition in France’s Leon Marchand.   And, rain continues to disrupt water quality at training in the River Seine.   ZB Sports Andrew Alderson gives Ryan Bridge the latest.  LISTEN ABOVE See omnystudio.com/listener for privacy information.