Leah O’Brien breaks Raelene Boyle’s Australian under-18 100m record from 1968 Olympics

Seventeen-year-old Leah O’Brien has broken the national under-18 100m record held by Australian sprint legend Raelene Boyle for 57 years.

O’Brien won the girls’ final at the Australian Junior Athletics Championships in 11.14 seconds (+1.7 wind resistance), eclipsing Boyle’s 11.20 that she set at…