Prior to that, Asher-Smith's mother informed her that she has earned a place at King's College London to study history.
"She texted me and I was like 'yippee'," The Guardian quotes Asher-Smith as saying. "It was about 20 minutes before I went to warm up so it was pretty close. It's quite a boost and I'm so happy.
"I was probably more nervous for my exams results than the heats to be fair. I was absolutely petrified of not getting into university but I got in. I don't know exactly what I got, but I'm going to King's College, London, for history and I needed three As so I got somewhere around there."
The world junior champion finished second-fastest in the heats, behind Holland's Dafne Schippers.