Third time's a charm

Two-time reigning Olympic champion in the women's 100m, Jamaican Shelly-Ann Fraser-Pryce will be going for an unprecedented triple in Rio.

Another gold medal would see the 29-year-old surpass American duo Wyomia Tyus (1964-1968) and Gail Devers (1992-1996), the only other women to manage successive titles in the most prestigious of sprint events.

Also a triple world champion in the 100m (2009, 2013, 2015), the diminutive Fraser-Pryce (1.52m) grew up in a deprived area of Kingston; it was a difficult childhood which shaped her character, and gave her an iron will to succeed. "You have a talent," she was told by her mother Maxine, "go and use it". Mission accomplished.