Stefanos Tsitsipas wins!
Bautista Agut vs Tsitsipas 5-7, 6-4, 4-6, 6-7
He has done it! Stefanos Tsitsipas wins five points on the trot in the tiebreaker to beat Roberto Bautista Agut.
The Greek star slumps to the ground in delight as he becomes the youngest man to reach the semi-finals of the Australian Open since Andy Roddick.