Dominic Thiem into US Open semis after straight sets win over Alex De Minaur

The second seed roared past young Australian 6-1 6-2 6-4

Dominic Thiem is through to the semi-finals (AP Photo/Frank Franklin II)

Dominic Thiem has his eyes firmly on the prize after sweeping aside Alex De Minaur to reach the US Open semi-finals.

The second seed roared past young Australian De Minaur 6-1 6-2 6-4 to move another step closer to a maiden grand slam title.