A the region sailor, Mark Sadler represents in competitive dinghy racing. Since February 2019, 6 races across 1 regattas have been recorded for Mark. Mark competes mainly in the Cape 31 fleet, alongside races in other fleets. Notable results include victory at the SailingSA events in the multiple fleets fleet and strong finishes at the SailingSA events. Mark continues to compete regularly across provincial and national sailing events.