Zverev and Thiem set for Semi-Final showdown at ATP Finals in London

Zverev last year claimed the title when he defeated both Roger Federer and Novak Djokovic in back-to-back matches to win the biggest title of his career at the event.

After defeating Daniil Medvedev, he is only two wins away from retaining his crown again. Despite that he has Dominic Thiem in front of him who leads the Head2Head series 5-2 and has defeated both Roger Federer and Novak Djokovic in his group.

“He's been playing some unbelievable tennis, maybe the best tennis that we have ever seen from him. Actually beating Roger and Novak on this court is very special. Doing it back to back is very, very difficult,” Zverev said. “It's going to be a very difficult match. I'm looking forward to it. Honestly, I'm just happy to be in the semis, and from here on we'll just see how it goes.”

In terms of Thiem he admitted that he believes this is the most difficult tournament to claim a victory in and that it gives you a lot of confidence if you do claim the honours for future tournaments as the end of the year approaches.

“I think that maybe this tournament is the most difficult to win, because you have to beat five Top 10 guys in a row. Okay, you can afford to lose one match maybe, but still, that's why I'm 100 per cent sure that if you win this title you can win, as well, any other title,” Thiem said. “I haven't done it yet, but I think that if you win this title, it gives you a lot of confidence for especially of course Australia, because it's the closest, but for the full next year.”

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