Germany's Alexander Zverev has clinched the year-end ATP world number one ranking for the first time in his career, capping off a remarkable season that included Grand Slam victories in Paris and New York.
Carlos Alcaraz breezed past Juan Manuel Cerundolo in straight sets to begin his Shanghai Masters campaign, while Daniil Medvedev and Felix Auger-Aliassime battled through tight matches.
Novak Djokovic secured the 102nd title of his career and extended his flawless record in Beijing to 34-0 after Alex de Minaur was forced to retire injured during the China Open final.