Baltimore Ravens eclipse Pittsburgh Steelers 28-14 to advance in AFC play-offs
Meanwhile, Los Angeles Chargers quarterback Justin Herbert was picked off a career-high four times in a 32-12 loss to the Houston Texans.
Follow all the action from the first round of the menβs and womenβs singles tournaments in Melbourne
Walker has requested a transfer to explore his options abroad
Man City 8-0 Salford City: Grealish ended a lengthy goal drought and James McAtee scored a hat-trick as Pep Guardiolaβs much-changed side hammered their League Two opposition in the FA Cup third round
Managerless Argyle, who are bottom of the Championship, triumphed away to the Bees, while Chelsea demolished Morecambe and Bournemouth hammered West Brom