She recorded a time of 53.288sec to beat her rivals by 2.311.
Powell lowered the mark by three-hundredths of a second, having recorded a time of 9.77 three times despite never winning a major competition.
Zijlaard, who is 34 and suffered from anorexia until meeting her husband and coach 10 years ago, recorded a time of 31min 11.531min
Race records show that, indeed, her chip had recorded a time of 7 17:50 at the end of the bike ride, before going silent.
As he opened the course for the official competitors to follow, he recorded a time that would have given him 12th place in the real race.
Nikitina recorded a time just 0.05sec slower that Yarnold's on her first run but lost time on a more ragged bottom section of her second to finish the day in third, 0.55sec behind the leader.
Gay suffered the injury during the US national trials and, before that, had been the fastest man on the planet this year having recorded a time of 9.79secs in the 100m.
But Miley – and everyone else for that matter – was made to look pedestrian by the 16-year-old Chinese swimmer Ye Shiwen who recorded a time of 2.08.90, just 0.45 outside the Olympic record, despite easing down.
Kristan "Dr Ice" Bromley did a time of 57.02 to leave him tied in 6th place while Dominic Parsons took a huge hit and could only recorded a time of 57.17, which leaves him in joint eighth place.
Two months ago, in late May, Bolt ran the worst 100m of his professional career and recorded a time of 10.04sec in Ostrava, failing to break 10 seconds for the first time in three years.
But now Johnson is back where he thinks he belongs, although still not in the sort of form that he showed in 1996 when he recorded a time of 12.92 seconds at the United States Olympic trials.
