Roger Federer advances to quarter-finals of Australia Open

*Melbourne:* Roger Federer flicked a switch after losing the opening set to crush Marton Fucsovics and book a record 15th Australian Open quarter-final on Sunday, with unheralded American Tennys Sandgren his next hurdle. The Swiss master took time to work out the Hungarian but when he did it was one-way traffic, romping to a 4-6,...