Kieser, Brenna represents TSC and races in the Western Cape sailing circuit. Kieser,'s competitive record on SailingSA begins in November 2025. Since then 7 races across 1 regattas have been completed. Kieser,'s primary class has been Optimist C, with additional appearances in other fleets. Key performances include winning the 2025 -11-30 Zvyc Interschools in the Optimist C fleet, along with the 2025 -11-30 Zvyc Interschools in the Optimist C fleet. Kieser, continues to compete regularly across provincial and national sailing events.