Seun Ogunkoya
... that sprinter Seun Ogunkoya broke the 10-second barrier in the 100 metres before turning 20 years old?
... that sprinter <b id="mwDPM"><a href="./Seun_Ogunkoya" id="mwDPQ" rel="mw:WikiLink" title="Seun Ogunkoya">Seun Ogunkoya</a></b> broke the <a href="./10-second_barrier" id="mwDPU" rel="mw:WikiLink" title="10-second barrier">10-second barrier</a> in the <a href="./100_metres" id="mwDPY" rel="mw:WikiLink" title="100 metres">100 metres</a> before turning 20 years old?