Ace from Thiem seals the first set
Thiem has taken the first set 6-1 in 40 minutes but this scoreline isn't indicative of the contest.
de Minaur is pushing him on every point but he can't hold his serve not match the power and placement that Thiem is bringing out in the key moments.
Don't rule out the 21-year old just yet. He has enough quality and fight to take this next set.
But he will live and die on finding a way to win points on his serve.
De Minaur: 'I'm not satisfied with where I am. This is where I want to be, but I'm not satisfied just coming here and getting to quarters any more. I want to keep on pushing. I'll strive for bigger and better things. I just got to keep improving.'