Less than four months later, with the
assistance of the altitude of
Mexico City at the
1968 Olympics, Hines improved the record to 9.95 while winning the gold medal on October 14, which became the first accepted fully automatic timed world record accepted when the
IAAF adopted such times in 1977. At those same Olympics, Greene took the bronze medal and all three teamed with
Mel Pender to win the gold medal in the
4x100 m relay in world record time. Over the next eight seasons, before the IAAF changed their record criteria, six more individuals tied the 9.9 hand timed world record. The automatic 9.95 was not surpassed until 1983, when
Calvin Smith ran 9.93, again at altitude exceeding , at the
U.S. Air Force Academy near It is worth noting that
Bob Hayes was timed at 9.9 seconds four years earlier in the final of the
100 metres at the
1964 Olympics in
Tokyo. The official time was given as 10.0 seconds because of an idiosyncratic method of measuring the 'hand' times, which were only used at that Olympics. ==See also==