World Athletics Championships: Nigeria's Tobi Amusan smashes women's 100m hurdles world record

Watch as Nigeria's Tobi Amusan smashes the women's 100m hurdles world record with a time of 12.12 seconds beating USA's Kendra Harrison's time of 12.20 from London 2016.

source https://www.bbc.co.uk/sport/av/athletics/62287695?at_medium=RSS&at_campaign=KARANGA