Defending champion Serena Williams needed just 45 minutes of playing time to advance to the fourth round of the Australian Open. The world number one defeated Russian teenager Daria Kasatkina 6-1, 6-1.Four-time champion Roger Federer also reached the last-16, beating Grigor Dimitrov 6-4, 3-6, 6-1, 6-4. It was the Swiss third seed’s 300th Grand Slam match win.

Italy, Denmark miss out on World Cup after shootout defeats
Tiger Woods pleads not guilty, will seek treatment
FIFA president says 'only' Plan A for Iran's World Cup schedule
Relegation-battling Spurs appoint De Zerbi as manager
