Dina Asher-Smith's secret injury & Elaine Thompson-Herah's gold in 100m at Tokyo Olympics

Relive a dramatic day in the women's 100m at the Tokyo Olympics as Dina Asher-Smith reveals she was running with an injury and Elaine Thompson-Herah won a second successive gold.

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COVERAGE DETAILS: Tokyo Olympics: Day-by-day guide to the key events, big stars and British medal hopes