Nigeria's Oludamola Osayemi and Ghana's Vida Anim are the only two African women left in the wome's 100m event.
The duo, reigning and former African champions respectively, were in good shape as they book their qualification from Heat 3 in second and third positions for tomorrow's Semi-Finals.
According to the rules, the top three runners in each heat automatically qualify for the next round. The runner with the next fastest time out of all of the heats will take the last of the 16 semifinal spots.
Women's 100m semi-final qualifiers - heat 1:
1 Shelly-Ann Fraser (Jam) 11.06 secs
2 Evgeniya Polyakova (Rus) 11.13
3 Jeanette Kwakye (GB) 11.18
Women's 100m semi-final qualifiers - heat 2:
1 Sherone Simpson (Jam) 11.02 secs
2 Muna Lee (US) 11.08
3 Chandra Sturrup (Bah) 11.16
Women's 100m semi-final qualifiers - heat 3:
1 Debbie Ferguson-McKenzie (Bah) 11.21 secs
2 Oludamola Osayomi (Ngr) 11.28
3 Vida Anim (Gha) 11.32
Women's 100m semi-final qualifiers - heat 4:
1 Kerron Stewart (Jam) 10.98 secs
2 Lauryn Williams (US) 11.07
3 Kim Gevaert (Bel) 11.10
Women's 100m semi-final qualifiers - heat 5:
1 Torri Edwards (US) 11.31 secs
2 Lina Grincikaite (Lit) 11.33
3 Ivet Lalova (Bul) 11.40