Alexander Zverev has been trying for a decade to win a Grand Slam and has overcome an array of challenges to put himself on the brink of a breakthrough at the Australian Open. The 6ft 6ins (1.98m) German has been destined for the top from a young age, hailing from a tennis family where his mother and father both played the sport to a high level in the former Soviet Union. "For me, my family is everything and I owe them a lot for helping me to become the tennis player that I am today," the 27-year-old, often seen as the sport's most unfulfilled talent, said.