Nash Rawiller is set to miss the Group Two Villiers Stakes meeting at Randwick after being outed for careless riding aboard Moss Trip in the Festival Stakes.
Rawiller was banned for six meetings for causing interference to Testashadow near the 1000 metres in Saturday's Rosehill feature.
He will ride at Rosehill next Saturday before beginning his penalty and can return on December 16.
Tommy Berry also found himself in trouble with stewards and was issued a four-meeting suspension for causing interference aboard Baller near the 800 metres in the Starlight Stakes.
Berry will ride next Saturday before beginning his ban and will be back in time for the Villiers program.