At the start of the season, few people would have backed Zverev to win two Grand Slams, with the German having already lost three major finals in a career which looked in danger of not living up to expectation.
But injuries to his biggest rivals – Alcaraz missing the French Open and Wimbledon, with Sinner ruled out of the US Open – opened the door for Zverev.
A below-par Zverev scraped through the opening rounds at Flushing Meadows in a series of early-morning finishes, but he gradually improved over a fortnight where he did not play a top-20 opponent until Shelton.
Zverev had not dropped a set against Shelton in all five of their previous meetings and immediately capitalised on a nervy start by his opponent.
Shelton double-faulted on break point in the first game of the match, handing over the type of initiative that opponents often struggle to wrestle back from Zverev.
Through the strength of his first serve, and his ability to unpick Shelton’s weaker backhand in the baseline exchanges, Zverev rolled through the opening set and clinched it when Shelton hit another double fault on set point.
Zverev edged the second set in a similar manner – this time without being gifted a break when his only opportunity arrived in the fourth game.
He instead showed why he has a strong tie-break record with another nerveless display and, unlike in the 2020 US Open final when he lost from a two-set lead, kept his composure in the pressure moments to secure a commanding victory.
Addressing his team which is led by his father Alexander senior and brother Mischa, Zverev said: “We went 30 years without winning a Grand Slam title and now won two in the span of three months.
“I think God has seen how hard we have work, how hard we have suffered and how much pain we went through.
“I think 2026 is the outcome of all the years that happened before.”