He also missed by 0.01 the national mark in the 100m where he was second in 10.20 .
The 19 - year - old Munyai was second in 20.10 and improved the mark of 20.16 by Riaan Dempers from 1995 .
Munyai also missed by 0.01 the national mark in the 100m where Munyai was second in 10.20 .
The 19 - year - old Munyai was second in 20.10 and improved the mark of 20.16 by Riaan Dempers from 1995 .