At the 1968 Summer Olympics in Mexico, Smith nursed an injured hamstring into the 200m final. In the race, teammate Carlos powered out to the lead through the turn, while Smith got a slow start. Coming off the turn, Smith charged past Carlos and sped to victory. Knowing he had passed his training partner and closest opponent, his victory was so clear, he raised his arms to celebrate 10m before the finish line. Still, he improved upon his own world record that would last for 11 years until Pietro Mennea would surpass it on the same track. Smith's time of 19.83 was among the first automatically timed world records for the event as recorded by the IAAF.