Jamaica’s bold ambitions of chasing a double sprint sweep evaporated in unexpected fashion after 100m bronze medallist Shericka Jackson failed to advance from the heats.

It was, however, the way in which Jackson saw her bid for another individual medal slip away that left onlookers slack-jawed.  Competing in heat 5, the athlete, one of the fastest women in the event this year, seemed well in control of the race early on but began to cruise closer to the line.

The Jamaican was passed by Portugal’s Lorène Bazolo and also Italy’s Dalia Kaddari at the finish.  Kaddari finished third in 23.26, the same time as Jackson but advanced when the times were rounded down further.  With the heat being one of the slower events Jackson was also unable to advance as one of the fastest losers.  Jackson’s heat was won by the Bahamas’ Anthonique Strachan.

There was no such trouble for Jackson’s compatriot, defending Olympic champion Elaine Thompson-Herah who advanced from heat 6 after finishing in third position.  The heat was won by Canada’s Crystal Emmanuel with Great Britain’s Beth Dobbin second.

100m silver medallist Shelly-Ann Fraser-Pryce also advanced in comfortable fashion after winning heat 2 in 22.22.  Namibia’s Beatrice Masilingi was second in 22.63, with the Netherland’s Dafne Schippers also securing qualification with her third-place finish of 23.13.

The women’s semi-finals will take place on Monday at 5:25 am.