Below you can see massive drops in his PBs over the last four months:
March 22, 2024 - 8:52
March 28, 2024 - 8:46
April 26, 2024 - 8:34
May 10, 2024 - 8:29
June 5, 2024 - 8:28
June 21, 2024 - 8:21
June 29, 2024 - 8:13 (becomes 12th fastest American in history)