Tegan Harrison is poised to write herself into the record books by becoming the second female apprentice to outride her Brisbane metropolitan apprentice's allowance on Saturday.

Harrison's all-the-way win on Jeteye Warrior at Eagle Farm on Wednesday was her 78th metropolitan winner.

She has 77 wins on Brisbane metropolitan tracks and one at Melbourne's Moonee Valley.

Harrison needs two winners before May to become the first female Queensland apprentice to outride her metropolitan allowance when the limit was 80 winners.

Lacey Morrison (Brisbane), Kathy O'Hara (Sydney) and Michelle Payne (Melbourne) outrode their metropolitan allowances but at that stage the limit was 60 winners and not the current 80.

Harrison has set all types of records in Queensland, last season being the first woman to win the metropolitan apprentices' title when she rode 44 winners - a record for any woman in Brisbane.

In just over three seasons of riding she has ridden 215 winners on all tracks.

Harrison said to outride her city allowance was something all apprentices hoped to do but she would not be obsessed about it.

She has a full book of eight rides at Eagle Farm on Saturday and will have a similar number of rides at Eagle Farm next Wednesday.

Top jockey Michael Cahill won't appeal a six-meeting suspension giving chief rival Tim Bell a chance to claw back valuable ground in the premiership race.

Cahill pleaded guilty to causing interference at Eagle Farm on Wednesday.

His six-meeting suspension was his first since June last year and will start the ban at midnight on March 5.

Cahill had made the decision to ride in Sydney on Saturday which had already proved a boon for his chief premiership rivals Bell and Munce.

He would have ridden five well-fancied chances at Eagle Farm but instead will partner Longport in the Group Two Millie Fox Stakes (1200m) at Rosehill.