200m.WR-Irena Szewińska:1968 Olympic Games,Mexico City - YouTube

https://www.youtube.com/watch?v=BsR2NK_XdFs

Irena Szewińska of Poland lowers her own 3 year old 200 metres WR in the 1968 Olympic Final in Mexico,blasting past the two Australian hopefuls Raelene Boyle...