Daniil Medvedev faces shock upset against teenager; Nick Kyrgios and Thanasi Kokkinakis stop in the doubles match; Jannik Sinner wins four set victory

Aussies in action

Rod Laver Arena

Alex de Minaur (8) def. Tristan Boyer (Q) 6-2, 6-4, 6-3

Jannik Sinner (1) def. Tristan Schoolkate (WC) 4-6, 6-4, 6-1, 6-3

Kia Arena

Destanee Aiava (Q) def. of Danielle Collins (10) 7-6, 4-6, 6-2

Court 3

Alex Michelsen def. James McCabe (WC) 7-6, 6-3, 7-6

John Cain Arena

J. Duckworth/A. Vukic def. T. Kokkinakis/N. Kyrgios – 7-5, 3-2 (walkover)

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