12 months ago Dominic Thiem was two sets up against Del Potro and had match points to advance to his first US Open quarter final, the Austrian lost the match.
Today he made the quarter finals with a very good hard court performance against Anderson.
Hard court performances like that are few and far between for Thiem who is as we know much better on a clay court due to the slowness of it.
Thiem only has two previous top 10 wins on hard v Monfils in 2016 and against Carreno Busta last year in London so with respect not really great challenges.
Dominic said that the deep court on Ashe helped him with the win.
Thiem is known for camping behind the baseline to return serve like Rafa does and on clay it does work for him. 10 of his 14 top 10 wins on the surface has come on the dirt.
Clay courts are slow and when the ball hits the ground it can slow quite quickly but on the tour hard courts can vary with speed, it is an unpredictable surface.
Thiem said the fact Ashe has a big back of the court he could have a better read on the serve of Anderson and have more time on it.
Thiem also served so well, he only got 49% of his first serves in but won over 90% of points on his first serve and didn’t face a break point in the match.
Thiem’s serving was one of my highlights on the tour last year, that kick he gets and the pure power he generates was exceptional and it’s good to see it again.
This is a big win for Dom, his best since Roland Garros but I feel if he is going to be effective going forward on hard courts he needs to reign it in or improve his return.