Queensland sprinter Lachlan Kennedy made history by running a 9.96-second 100m twice at the Australian Athletics Championships, becoming the first Australian to break the 10-second barrier on home soil.

The 22-year-old joined Ben Davis on 4BC Breakfast and opened up about his fierce rivalry with Gout Gout, managing his Type 1 diabetes on the track, and his confident response to American sceptics questioning the Australian race times.