Jacko Gill

Jackson Jacko Gill is a shot putter from New Zealand. At the 2010 World Junior Championships in Athletics, he won the gold medal in the shot put at only 7008491767200000000 15160years, 213160days, surpassing Usain Bolt as the youngestever male junior champion. He successfully defended his title, winning gold again at the 2012 World Junior Championships in Athletics. Gill throws with his right hand, using the spin technique.

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Source: Wikipedia