Aussie sprinter Jamie Jack made noise at the 2025 US Summer Championships in Irvine last week. On day 1, he took victory in the 50 free over US Olympians Hunter Armstrong, Caeleb Dressel, and Brooks Curry, posting matching 21.63s in prelims and the final. But Jack still thought there was more in the tank. Taking a day of rest on Day 2, he time trialed the 50 free on Day 3, swimming a 21.43 to make him the 5th fastest Australian man in history and tie for 4th in the world this season. After returning home, Jack sat down with SwimSwam to discuss his season between Australian Trials, where he was 21.8, and US Champs. The SPW product said he discussed a plan with coach Dean Boxall that focused just on the 50 free (only for the rest of the season). That also included training with Cam McEvoy and his coach, Tim Lane, in the lead-up to Irvine.