Here's a new one for you . . . Marko Ferreira, 19 yrs old of South Africa, ran a 10.09s (-0.6w) in the 100m semi-finals at the ASA Age Group Championships in Germiston. He later won the final in 10.16.
His 10.09 is the fastest U20 in Africa, and 2nd fastest in the world at the moment.