The Breakfast presenter spoke to Jehan Casinader in the first episode of TVNZ's new mental health panel show, The Inside Word.
Downes reveals the second tragedy of her marriage to the legendary cricketer in an exclusive interview on TVNZ's Sunday.
The Kiwi left his opponent on the canvas in the first round with a devastating right knee to secure the knockout win in Atlantic City.
"As we passed, my wife remarked that he looked totally out of it," Allan Nicholls said.
Whincup received a 38 second post-race time penalty late last night for turning off his pitlane speed limiter.