Aslan Karatsev creates history at Australian Open after defeating Grigor Dimitrov to reach semi-finals

Aslan Karatsev became the first grand slam debutant in the Open era to reach the semi-finals after beating an injured Grigor Dimitrov at the Australian Open. Dimitrov won the first set but became increasingly hampered by a back spasm and during the third and fourth sets was struggling to serve and move around the court.