PARIS (Reuters) - Hard work and looking after his physical and mental health are the priorities for Italian teenager Jannik Sinner as he rises through the tennis rankings. "I have people who are close to me, my team, my family, I feel well with them and I'm physically healthy. My parents are healthy, my friends are healthy, I'm healthy, too," he said. We'll see where I'm going to be. You cannot tell me I'm not going to ski, it would not be realistic," he said.