Orpington sprinter Dina Asher-Smith is the new world 100m junior champion.

The Blackheath & Bromley Harriers member led the field home in Oregon in a time of 11.23s to secure the crown.

Asher-Smith, 18, said: “I can’t believe that I’m world junior champion.

“So many great people have done it before and it’s really humbling to be among them.

“I’ve worked really hard for it for such a long time and to be able to fulfil what I really wanted to do is amazing.”

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