A TAB punter has placed $108,000 on Winx to win this Saturday's G1 Chipping Norton Stakes (1600m) at odds of $1.06.

According to TAB's Media Manager Glenn Munsie, the wager is the biggest single bet the operator has ever taken on the superstar mare.

The previous largest bet on Winx was in last year's Cox Plate, with a punter plonking $106,500 on the 15-time Group One winner at $1.15.

Winx of course won that race, albeit narrowly, extending her winning streak to 22 races.

The TAB customer who has parted with $108,000 on the mare for her Randwick return, stands to make a profit of $6,480 if Winx is able to add a third Chipping Norton to her trophy cabinet.

Winx is currently at $1.08 across most of the corporates, while Betfair punters can have up to $36,000 on her at $1.10 (as of Thursday 1pm).