The Australian's timing was perfect as he slipped out of the Croatian's cover and put a penalty on his rival. Read more
The New Zealanders failed to cover on the final beat and lost the Gold by 2 seconds.
Peter Burling and Blair Tuke sailed a superb race to confirm that they are the best crew in the class, winning by a staggering 43 points.
Croatia won their first sailing Gold but the battle between Australia and Greece was epic.
New Zealand did enough to secure the Silver with France pipping the Dutch for Bronze.
With other sports failing to fire, Tom Slingsby's Laser victory started a Gold rush that made sailing the focus of attention.
Jake Lilley talks about his two steak day and the reunion with his father.
"He has a great attitude, great work ethic and is just a great guy."
At 54 Lange is the oldest competitor at the sailing, he has had the pleasure of watching his sons represent their nation in the 49er, and he has survived cancer in the past year.
Caleb Paine of the USA won the medal race but Scott dominated the class.
In the Women's division, the British pair has already secured the Gold.
The Kiwis have an amazing 34 points lead, while Outteridge and Jensen need to put a boat between themselves and Germany to take Silver.
A penalty turn on the final run almost cost Sante Lange and Cecelia Saroli (ARG) but they recovered to cross in sixth, just enough for the Gold.
Tonci Stipanovic attacked the Australian but Burton turned the tables.
Annalise Murphy was briefly in Gold medal position but was happy to settle for Silver after the disappointment of London.