As his first opponent was Diego Schwartzman, the Serbian came in with a good record of outstanding results at the Nitto Finals. He's had a 5-0 record against the Argentine and Djokovic is a 'shoe-in' for probably winning the event this year with winning the Nitto 5 times from 2008 then 2012-2015.
Schwartzman hung in for the first match, with the Serbian leading 4-3 in the opening set games. As they traded cross courts and down-the-lines, Djokovic had the advantage. To allow Djokovic to take his chances to capture the first set 6-3, Diego Schwartzman may have made a little too many unforced mistakes.
The skill of the Serbian to out-rally and prepare his strategies well enough played a good dominant game to win the 6-3, 6-2 decision set and match.
Until last year, he recalled how thrilling it was to play in Arena 02. Schwartzman could have run out of steam being the season's final tournament and attempting to make a strong showing at his Nitto Finals debut.
Even though he travelled to New York to play the Cincinnati Masters, losing in the 2nd round the six-month layoff due to the world health crisis had an impact on the Argentine game. In the first round with Cameron Norrie, he suffered through a 5-setter at the US Open to suffer the defeat.
The Argentinean went deep into events in five tournaments, either reaching the semi-finals or finals without becoming the winner. The finals of the Nitto ATP have just started and what makes it unique is that it is a round-robin event.
All Novak Djokovic knows is that he won the 1970 Tokyo Group consisting of Schwartzman, Daniil Medvedev and Alexander Zverev, with his group. He feels assured, physically and mentally, that he can not only be proud of having a meaningful result but also support his group to win.