ATP Finals LIVE: Thiem produces sensational performance to come back and stun Djokovic after Federer beats Berrettini

DOMINIC THIEM produced one of the best performances the O2 Arena has seen since it started hosting the ATP Finals in 2009 to stun Novak Djokovic.

The Austrian fell a set behind but turned on the heat and played lights-out tennis to claim a 6-7 6-3 7-6 victory and book his place in the last four for the first time.

It means Djokovic and Roger Federer will now face off in a showdown battle on Thursday with the winner joining Thiem in Saturday’s semis.

The Swiss ace earlier saw off Matteo Berrettini 7-6 6-3, with the Italian No8 seed now unable to progress out of the group.

• • Thiem fights back from a set down and 4-1 in the deciding tie-break to beat Djokovic and advance
  • Federer beats Berrettini in straight sets at the O2 Arena in London
  • Watch Djokovic vs Thiem on Amazon Prime