WINX has set more history hours before the Cox Plate with one punter unloading the biggest bet ever seen on the wonder mare.

The Herald Sun reports a punter outlaid a massive $201,200 at $1.22 to win $44,264. The bet was placed at 10.25am.

That same punter has now placed a total of $1.4 million on Winx, including every race since the 2017 Chipping Norton Stakes.

In total, the punter has backed Winx in 11 straight races, making a $153,637.50 profit.

With another win today, he takes his tax-free earning to $197,901.50.

If the unthinkable occurs, and Winx loses, the punter will suddenly be in the red to the tune of more about $50,000.

WHAT TIME IS THE COX PLATE AND WINX?

The race will start at 2pm Perth time (5pm AEDT)
The Group 1 race is run over 2040 metres
The Cox Plate winner takes home a cool $5 million

Meanwhile, her strapper has posted a heartfelt tribute to the mighty mare just hours out from her historic race.

By the champion’s side almost everyday, Umut Odemislioglu said she has nothing to prove today and that all he hoped for was a safe finish to the race.

"Winx doesn’t have to prove anything to anyone! She is a LEGEND and I’ll be always proud of her," he wrote. "Winning or losing today doesn’t really matter.

"I hope that it’ll be a safe race and she’ll come home safe and healthy. That’s all I want. Enjoy the one of the greatest race day in this century."