Swiss beats Tennys Sandgren 6-3, 2-6, 2-6, 7-6 (10-8), 6-3
Novak Djokovic awaits in last four after beating RaonicRoger Federer has had many improbable victories in his career, and a smattering of unusual defeats, but his passage into the semi-finals of the 2020
Australian Open after three-and-half hours of undiluted drama against Tennys Sandgren was in another dimension.
![Roger Federer saves seven match points en route to semi with Djokovic](https://i.guim.co.uk/img/media/d01ee4bf16cb66b71add17f22f91f395b3b3558b/0_90_4000_2399/master/4000.jpg?width=1200&height=630&quality=85&auto=format&fit=crop&overlay-align=bottom%2Cleft&overlay-width=100p&overlay-base64=L2ltZy9zdGF0aWMvb3ZlcmxheXMvdGctZGVmYXVsdC5wbmc&enable=upscale&s=3d999f5ebf139601f157d01316d42a7d)
He won 6-3, 2-6, 2-6, 7-6 (8), 6-3 to put the world No 100 away on a warm, sticky afternoon on Rod Laver Arena to set up a semi-final against Novak Djokovic, who later saw off Milos Raonic – but those are the bare bones of the story.