Adam Hyeronimus has been slapped with an 11-meeting suspension for two separate careless riding incidents at Rosehill.
Stewards suspended Hyeronimus for six meetings for his ride on Lord Macau in the first race on Saturday, the Hyland Race Colours Handicap for two-year-olds.
He was then handed five meetings for his ride on Dark Eyes in the second race.
Tommy Berry will also spend time on the sidelines after he was banned for three meetings for his ride aboard Krusty in the two-year-olds' race.
Berry's suspension ends on July 28.
Winona Costin also drew the ire of steward for her ride in the same race on Salsonic and received a four-meeting ban that ends on July 27.
She will be available to ride at Canterbury on July 30, which is the final meeting before she finishes her apprenticeship.