Dina Asher-Smith's secret injury & Elaine Thompson-Herah's gold in 100m at Tokyo Olympics
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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.
Watch live coverage of Tokyo 2020 on BBC One, BBC Two, the BBC Sport website, app and BBC iPlayer
COVERAGE DETAILS: Tokyo Olympics: Day-by-day guide to the key events, big stars and British medal hopes