Champion mare Winx will face six rivals when she attempts to extend her winning streak to 21 in the Turnbull Stakes at Flemington.

Saturday will be the first time Winx has raced at Flemington and she will jump from barrier two under regular rider Hugh Bowman in the Group One race over 2000m.

Makybe Diva Stakes winner Humidor, expected to be her main rival, drew barrier four while Magicool drew the inside gate and Sir Issac Newton the widest of the seven runners.