Making his first return to Shanghai since 2019, Djokovic acknowledged the prospect of winning a landmark title is giving him "extra motivation" in the ATP 1000 event.

Djokovic, a record four-time champion, has won more matches at the event than any other player.

With a host of other top-10 players remaining in the draw, including Jannik Sinner, Carlos Alcaraz and Daniil Medvedev, tougher tests undoubtedly lie ahead.

But, in his first ATP tournament since a shock third-round exit at the US Open five weeks ago, fourth seed Djokovic has looked sharp.

Causing problems for opponents by serving precisely and overwhelming them in the baseline exchanges, he has not dropped a set against American youngster Alex Michelsen, Italian world number 30 Flavio Cobolli and now Safiullin.

"I'm enjoying myself on the court and when you play well you are feeling good, there is a lot of joy in striking a tennis ball," added Djokovic.

"These matches and sensations are the reasons why I still play.

"I believe I can play at a high level and it's about keeping that consistency."