2018 Nitto ATP Finals trophy holder Alexander Zverev put in a high quality performance to beat five-time former champion 7-6, 4-6, 6-3 in 2 hours and 28 minutes, reaching the title match for the second time.
Novak got his Turin season finale campaign off to a good start against Casper Ruud, with a 7:6, 6:2 victory in his opening round-robin match on Monday. The Serbian star moved to 1-0 in Green Group, as well as Andrey Rublev (RUS, 5) who outplayed Stefanos Tsitsipas (GRE, 4).
Novak has become the first singles player to qualify for the 2021 Nitto ATP Finals, to be held at the Pala Alpitour in Turin from November 14-21, after he captured a record-equalling 20th Grand Slam title over Matteo Berrettini on Sunday at The Championships, Wimbledon.
Novak saved four match points in the second set and led 4-0 in the third set tie-break, but haven't made it into the Nitto ATP Finals championship match. Dominic Thiem clinched a 7-5, 6-7 (10), 7-6 (5) win in three hours. The Serbian star has enjoyed another exceptional season, capturing four titles, and has finished as world no.1 for the sixth time in the past 10 years.
Novak earned a semi-final spot following a 6-3, 7-6 (4) win over Alexander Zverev (GER, 6). For a place in the final, the top seed will face third-seeded Austrian Dominic Thiem on Saturday at 15:00 CET.
Top seed and five-time former champion failed in attempt to score his second win in as many matches at the 2020 season finale in London, as he was defeated by no.4 seed Daniil Medvedev 3-6, 3-6 in one hour and 21 minutes at The O2 Arena. Novak will look to book his place in the last four when he meets Alexander Zverev (GER, 6) on Friday.
Novak started his Nitto ATP Finals run with a 6-3, 6-2 win over eighth seed Diego Schwartzman. The world no.1 beat the Argentine season finale debutant in 78 minutes to move to 1-0 in Group Tokyo 1970.
Third seed Roger Federer defeated no.2 seed Novak 6-4, 6-3 to reach the last four at the Nitto ATP Finals. The Serb, who has won the season finale title five times, will finish the year as world no.2.
The Austrian rallied to beat Novak 6-7 (5), 6-3, 7-6 (5), and made his first Nitto ATP Finals semis. Djokovic will face no.3 seed and six-time titlist Roger Federer (SUI) on Thursday, for a spot in the last four.