Warren Gatland has explained why he has opted to pick two specialist opensides to start this Saturday’s Rugby World Cup quarter-final versus Argentina rather than go with the traditional balance of a bulkier blindside along with a fetcher No7. Warren Gatland has explained why he has opted to pick two specialist opensides to start this Saturday’s Rugby World Cup quarter-final versus Argentina rather than go with the traditional balance of a bulkier blindside along with a fetcher No7.