Hopman Cup: Murray shown the door by 'improved' Kyrgios; Serena withdraws

IMAGE: Australia's Nick Krygios plays a forehand against Britain's Andy Murray during their men's singles match at the 2016 Hopman Cup at Perth Arena on Wednesday. Photograph: Will Russell/Getty......

Hopman Cup: Serena retires with knee injury

IMAGE: USA's Serena Williams reacts. Photograph: Claus Fiske /Reuters World No 1 Serena Williams retired from her Hopman Cup match against Australian Jarmila Wolfe on Tuesday with a knee injury......