World no. 3 Dominic Thiem will compete in the first US Open semi-final following a commanding 6-1, 6-2, 6-4 triumph over Alex de Minaur in two hours and four minutes. Eager to go much further than a year ago, Dominic has lost one set in New York so far, becoming the first Austrian player in the last four at the US Open.
In what should be one of the matches of the tournament, Dominic will face Daniil Medvedev in the battle for the final, with the Russian winning all five encounters in straight sets. The Australian Open finalist had the upper hand against the young Aussie, blasting 43 winners and 31 unforced errors, leaving Alex, the first-time Major quarter-finalist, on a modest 17-25 ratio.
Dominic struggled a bit on the second serve, suffering two breaks from seven chances offered to de Minaur who couldn't turn that into at least one set, dropping half of the points in his games and giving serve away seven times from 13 opportunities offered to the Austrian.
With controlled aggression and massive help from his initial shot, Thiem stormed over de Minaur in the opening two sets, struggling a bit in the second part of the third but moving over the top to save energy for the anticipated Medvedev encounter on Friday.
Dominic held at 15 with a service winner in the opening game, securing a break in game two when Alex sprayed a forehand error. The youngster pulled it back already in the next game following a forehand mistake from the Austrian who secured the second break in game four after another loose forehand from the Aussie.
Thiem had to dig deep in game five, fending off four break chances to remain in front thanks to a terrible volley from de Minaur at the net. From 40-15 in game six, Alex lost four straight points on serve to suffer the third break, allowing Thiem to close the opener with an ace for a 6-1.
The second set was more fluid and it kicked off with two holds at love for de Minaur.
Dominic Thiem will compete in the first US Open semi-final.
That would all change in game five, though, as he suffered a major blow after losing five straight points, finishing the game with a double fault that sent Dominic 3-2 up.
The Austrian confirmed the break with an ace and grabbed another one when de Minaur hit a double fault in game seven. Serving for the set at 5-2, Thiem blasted three service winners to seal it in style, opening a massive gap and looking good to move over the top in the third.
He broke in the first game and forged a 3-1 lead before de Minaur bounced back, securing a break in game six to level the score. The youngster defended three break points in the seventh game to gain the advantage, forcing two deuces on the return before Dominic leveled the score at 4-4.
Thiem clinched the crucial break at 15 in game nine and emerged at the top with a forehand down the line winner at 5-4 to reach his first US Open semi-final.