Fred Kerley claims he is not using any performance-enhancing drugs, yet remains confident he can break Usain Bolt’s legendary 9.58-second 100m world record set at the 2009 IAAF World Championships, believing the mark can be lowered to an astonishing 9.42 seconds
Performance in track and field is no longer defined by training alone. It is accelerated by biochemical optimization and shaped by engineered footwear.