Jamaican Olympic gold medallist Bolt runs against Moreira of Brazil, Bailey of the U.S. and Martina of...
Jamaican Olympic gold medallist Usain Bolt (2nd L) runs against Jose Carlos Moreira of Brazil (R), Ryan Bailey of the U.S. (2nd R) and Churandy Martina (L) of the Netherlands in the "Mano a Mano" challenge, a 100-meter race in Rio de Janeiro April 19, 2015. REUTERS/Ricardo Moraes