Frustrated by recurring injuries that have stifled his ambition and cut his progress off at the knees, 2013 World U18 Champion Martin Manley has opted for retirement at the age of 24.

Double Olympic champion Elaine Thompson-Herah, Olympic and World Championships 400m bronze medalist and former 100m world record holder Asafa Powell have been named to a Jamaican selection that has named to participate in the World Relays set for May 1-2 in Chorzow, Poland.

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