Winter Olympics: Chloe Kim says half-pipe gold ‘still hasn’t hit me’ as China’s Eileen Gu lauds ‘my friend, inspiration and big sister’

• US snowboarder ‘so proud to bring home another gold’ after becoming first woman to secure back-to-back Olympic titles in the event
• The 21-year-old Kim cries tear of joy at bottom of slope after amazing first run, having endured ‘the worst practice of my life’