1.1 billion won in prize money alone over 137 days. As expected, the world's strongest player, Jannik Sinner, is sitting on a fortune. It's insane... The prestige of becoming the second player in history to win a Career Golden Masters. OSEN = Reporter Ko Seong-hwan. World No. 1 Jannik Sinner (25) of Italy has made another piece of tennis history. Naturally, enormous prize money is following suit.