Eugene Amo-Dadzie, who is a full-time accountant and started running seriously four years ago, is the quickest 100m runner in Europe this year.
If anti-doping regulations had been strictly enforced, Calvin Smith, a gifted American sprinter with a distinctive upright style, would have left the 1988 Seoul Games as the Olympic 100 metres champion and world-record holder.
The top Indian male and female finishers will now stand to gain $7,500 each.
Cricketers might be excited at the idea of competing in Olympics but former champion Linford Christie has strongly opposed it, fearing the sport would "hamper" prospects of individual disciplines which wait for the Games to showcase their talents to the world.
Kerley, hoping to be the first American winner since Justin Gatlin in 2004, ran brilliantly for second, with De Grasse finishing fast in another lifetime best.
Secret papers have revealed that senior officials in the Thatcher government were not worried about a boycott by African and Caribbean nations that made the 1986 Commonwealth Games in Edinburgh appear as a white-only event.
In his childhood, Jacobs built up the figure of his father to explain his absence to himself and others.
Always the crown jewel in the Olympic athletics programme, the Rio 100 metres final is shaping up to be extraordinary for many reasons.