Amusan shatters 100m hurdles world record to revive super shoes debate

• Nigerian clocks 12.12sec to beat Kendra Harrison's record
• Mondo Duplantis takes pole vault to new heights at 6.21m

Nigeria's Tobi Amusan reignited the debate about track and field's new super shoes as she unexpectedly shattered the 100m hurdles world record in Eugene.

On a night when Mondo Duplantis also broke his own pole vault world record, Amusan ran a staggering 12.12 seconds in her semi-final to beat Kendra Harrison's old best by 0.08 sec - smashing her personal best time by nearly three-tenths of a second.