Gauff shocked by Wang at Australian Open as Keys beats 2020 champion Kenin

No 18 seed makes 38 unforced errors in first-round-defeatKeys beats No 11 seed Kenin in battle of AmericansVictories for Opelka, Paul and McDonald on men’s side Coco Gauff: ‘It’s just learning when do I play my best tennis, and today wasn’t the best tennis’. Photograph: Michael Errey/AFP/Getty Images China’s Wang Qiang secured her first win over a top-20 player since beating Serena Williams at Melbourne Park in 2020 after upsetting 18th-seeded Coco Gauff 6-4, 6-2 at the Australian Open on Monday