Day 5: Osaka and Serena out, Fed survives and Caro bids farewell

Coco Gauff upstages Naomi Osaka, Serena Williams ousted by Wang Qiang, Federer holds on in five and farewell to Caroline Wozniack on a jaw-dropping Day 5 of the Australian Open. See omnystudio.com/listener for privacy information. See omnystudio.com/listener for privacy information.