Jake Doran's pb coming into the race was 10.47 from March of 2017.
Video of race:
https://twitter.com/AthsAust/status/1013539723883630593
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Jack Doran: “I’m so stoked with how I went today. I didn’t think anything remotely like that would happen today, I wasn’t very hyped or feeling the greatest going into the competition so when I got a PB in the heat I was over the moon. I pulled up a little sore as I didn’t have much race fitness after my injury so I was just gonna try and win the final, but to come out and pull that time was absolutely insane. Completely out of nowhere.”
Article:
https://trackalerts.com/press-release/doran-warms-up-for-world-u20-with-10-15-njr/112128
https://www.iaaf.org/news/news/jake-doran-oceania-100m-record