London - All the South Africans who competed in the early sessions of their respective Olympic events on Tuesday, enjoyed success and progressed through to the next rounds.
Bridgette Hartley qualified first in her semi-final canoe sprint, in the K1 500m single women heats in Eton Dorney.
She came second in her heat, in one minute, 53.051 seconds (1:53.051) and went on to win her semi-final in an improved 1:51.286, taking her through to Thursday morning's final.
In the men's 110m hurdles, Lehann Fourie came second in his heat, in 13.49 seconds, which was a season's best for him.
He finished behind Cuban world record holder Dayron Robles (13.33) and will compete later on Tuesday in the third of the semi-finals.
Bronze medallist at the World Championships in 2011, Sunette Viljoen qualified in third place for the javelin finals, with a throw of 65.92m
In Thursday night's final, she will be up against Czech Barbora Spotakova, the gold medallist at the 2008 Olympic Games and Germany's Christina Obergfoll, who took bronze in Beijing.
Anaso Jobodwana came second in the men's 200m heats, in 20.46 seconds, behind Christophe Lemaitre of France, who qualified in 20.34.
Usain Bolt, running in the first heat, qualified in 20.39 and the two could meet in the semi-finals on Wednesday evening.
Jobodwana, studying at Jackson State University, Mississippi, received a special message of good luck from his father's boss, Correctional Services Minister Sibusiso Ndebele, who wished him well for the Olympic Games.