Nick Kyrgios

Melbourne: Nick Kyrgios has become a rebel with a cause by creating his own foundation to help underprivileged youth, admitting it was time to "knuckle down" and grow up. The volatile Australian, who begins his Australian Open campaign today, wants to help the welfare of disadvantaged youngsters by creating the NK Foundation. It is all part of the young gun finding more maturity after frequent criticism in the past for his on-court blow-ups.