Roger Federer beats Tomas Berdych to reach Australian Open semi-final - highlights
Watch the best moments from the Australian Open quarter-final
Roger Federer took a step closer to retaining the Australian Open title with a 7-6, 6-3, 6-4 win over Czech No 19 seed Tomas Berdych.
Federer, 36, is chasing his 20th grand slam title and will meet South Korea's Hyeon Chung for a place in Sunday's final.
Watch the highlights from Federer's quarter-final win above.
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Updated: January 24, 2018 04:15 PM