The British No 1 joined Italian Sinner, the Australian Open champion, in an all-star scratch pairing at the National Bank Open as preparations for the US Open began in earnest.
The 22-year-olds did not look like they had never played together before as they ran away with the first set against Belgians Sander Gille and Joran Vliegen, the 16th seeds, without dropping a game.
Gille and Vliegen, an experienced doubles pair – albeit beaten by Andy Murray and Dan Evans at the Olympics – levelled the match after a one-sided tie-break.
Draper, whose last outing was a defeat at the Olympics by Taylor Fritz, had only played three ATP doubles matches in his career and lost them all.
Sinner, who unlike his new partner actually has a doubles ranking, was playing his first match since Wimbledon having missed Paris 2024 with tonsillitis.
The duo are two of a number of singles players, including Russian world number five Daniil Medvedev, in the doubles draw looking for extra court time ahead of Flushing Meadows.
They will meet American Ben Shelton and Alexander Bublik of Kazakhstan in the next round.
Shelton and Bublik progressed after Britain’s Henry Patten and partner Harri Heliovaara, the Wimbledon champions, had to retire from their match after colliding with each other as both went for an overhead.
Draper goes back to the day job on Wednesday when he faces Australian Jordan Thompson in the singles.
