Already shaping as the unlikeliest grand slam success of his illustrious career, Rafael Nadal ensured it was just that after an extraordinary Australian Open final.

And what a time to deliver it, clinching a record-breaking 21st major title by beating Daniil Medvedev, breaking his tie with Roger Federer and Novak Djokovic for the most grand slams won by a man.

Nadal himself admitted reaching the final in Melbourne was unexpected, having ended his 2021 in August and doubted his career due to a persistent foot injury.

That injury is not going away, making the success even more remarkable. After five hours and 24 minutes on Rod Laver Arena, history was made as Nadal secured a 2-6 6-7 (5-7) 6-4 6-4 7-5 victory.

From two sets to love down against a man 10 years younger, wrapping up at 01:11 local time (14:11 GMT).

Rafael Nadal has won a record 21 grand slam titles

Nadal had only won the Australian Open once before, in 2009. Now, he is the only champion to have ever come from two sets to love down to win in an Australian Open final in the Open Era.

Not only was Nadal two sets to love down, he faced 0-40 in the sixth game of the third set. He was also staring down an in-form opponent as Medvedev aimed to become the first man to follow up his maiden major title with another grand slam at his next event. But, spurred on by a vocal and enthusiastic Rod Laver Arena crowd, Nadal found a way. He found another level, as he has throughout his career. In fairness, Medvedev took his game up a level, too, at least until some madness in the ninth game of the third set.

That concentration lapse had cost him one set, and Medvedev was unable to deal with an increasingly excited – and sometimes disrespectful – crowd in the fourth, as well as a surging Nadal.

As Sunday ticked into Monday with the deciding set underway, Nadal broke the Medvedev serve with a forehand winner down the line in the fifth game. Even the best get nervous, though, and he relinquished that advantage when serving for the title. Yet like a typical champion, Nadal responded instantly, breaking again before serving it out to love.

In sets one and two, Nadal had 21 winners and 36 unforced errors, turning that into 48 and 32 respectively in the final three.

For just the third time in his illustrious career, Nadal had completed a comeback from two sets to love down at a grand slam. And he has now won every grand slam at least twice, becoming just the second man in the Open Era to manage that, alongside Djokovic.

Such a moment had seemed unlikely just months ago, when Nadal and his team had doubts over whether he would ever return to the ATP Tour due to his foot injury.

Nadal says those doubts remain, but his start to 2022 suggests he is, as ever, a contender as long as he remains on the court. However unlikely, even if looking impossible, Nadal is still capable of the absurd.