Nick Kyrgios Melts Down After U.S. Open Loss, Smashes Two Rackets On Court

US Open: Naomi Watts waves an Australian flag and cheers on Nick Kyrgios

Nick Kyrgios girlfriend Costeen Hatzi at match against Thanasi Kokkinakis

Nick Kyrgios and girlfriend Costeen Hatzi look loved-up in New York ahead of his US Open match