Rafael Nadal, Stan Wawrinka, Dominic Thiem and Simona Halep enter in quarter-finals of Australian Open

In Tennis, Rafael Nadal, Stan Wawrinka, Dominic Thiem and Simona Halep have reached the Australian Open quarter-finals. Spanish top seed Rafael Nadal battled past rival Nick Kyrgios in a thrilling four-set match. Nadal will face Austrian fifth seed Dominic Thiem in the last eight. Stan Wawrinka produced some of his best tennis to battle past fourth seed Daniil Medvedev. Wawrinka next plays either compatriot Andrey Rublev or German seventh seed Alexander Zverev. Dominic Thiem also advanced with a...