As Roger Federer hit a succession of stunning backhands, charged into the net to strike assured winning volleys and played some scarcely believable half-volleys from the baseline, it was hard not to wonder whether the 35-year-old Swiss has ever played better.

Federer’s crushing 6-3, 6-4 victory over Rafael Nadal in the final of the Miami Masters on Sunday took his record in 2017 to 19 victories in 20 matches. Having also won the titles at the Australian Open and Indian Wells Masters following his return after a six-month injury lay-off, the old master is already back up to No 4 in the world rankings.

If the statistics are remarkable enough, it has been the manner of his victories that have all but defied belief. Nadal, who also lost to his great rival in the Melbourne final and in the fourth round at Indian Wells, is another enjoying a new lease of life after an injury-plagued 2016, but there were periods in the Miami final when the 30-year-old Spaniard was comprehensively outplayed in the latest of their 37 career meetings.

We have come to take for granted Federer’s majestic forehand, his wonderfully consistent serve and his lightness of foot, but he has new weapons in his arsenal this year.

Federer vs Nadal, Miami Open final 2017 - in pictures Show all 14 1 /14 Federer vs Nadal, Miami Open final 2017 - in pictures Federer vs Nadal, Miami Open final 2017 - in pictures Roger Federer wins the Miami Open Roger Federer denied Rafael Nadal a first Miami Open title as he powered his way to a straight-sets victory in Sunday's final. Getty Images Federer vs Nadal, Miami Open final 2017 - in pictures The two veterans before the match Federer was attempting to win his third Miami Open title; Nadal his first. Getty Federer vs Nadal, Miami Open final 2017 - in pictures Federer starts brightly Federer started the match in fine form, with his first serve averaging above 120mph. Getty Images Federer vs Nadal, Miami Open final 2017 - in pictures Nadal fights fire with fire But Nadal also came racing out the blocks, impressing with his powerful groundstrokes. Getty Images Federer vs Nadal, Miami Open final 2017 - in pictures A powerful return of serve Key to Federer's success at Indian Wells and Miami has been his aggressive return of serves, and Nadal seemed taken aback with how quickly he was stepping in to blast the ball back down the line. Getty Images Federer vs Nadal, Miami Open final 2017 - in pictures Nadal broken Eventually Nadal's serve was broken, with Federer taking a 1-0 lead. Getty Images Federer vs Nadal, Miami Open final 2017 - in pictures Federer serves The second set followed a similar pattern to the first, with Federer's serve magnificent. Getty Federer vs Nadal, Miami Open final 2017 - in pictures Nadal in action Again Nadal started well, but again he was broken late on during the set. Getty Federer vs Nadal, Miami Open final 2017 - in pictures Federer races to return on his forehand Federer forced an error to take a 5-4 lead and the opportunity to serve for the title. Getty Federer vs Nadal, Miami Open final 2017 - in pictures Relief Federer successfully served for the match and looked visibly moved to win his first Miami Open title in over a decade. Getty Images Federer vs Nadal, Miami Open final 2017 - in pictures Crandon Park erupts The ageing Crandon Park erupted when Federer sealed the title, despite large number of Latin America fans urging Nadal on. Getty Federer vs Nadal, Miami Open final 2017 - in pictures Posing with the ballboys and girls The champ poses for a celebratory picture. Getty Images Federer vs Nadal, Miami Open final 2017 - in pictures Trophy time And there is a burst of orange ticker-tape when he collects his trophy. Getty Images Federer vs Nadal, Miami Open final 2017 - in pictures Success Victory means Federer has now completed the Sunshine Double three times in his career. Getty Images

Federer’s driven half-volleys from the baseline have repeatedly taken opponents by surprise by turning defence into instant attack. He plays them from positions where even defensive shots would be extremely difficult for most. His timing and touch are so exquisite that he has been hitting them for winners past his nonplussed rivals.

If the seven-times Wimbledon champion used to have a significant weakness it was his backhand, which Nadal in particular always targeted. Hitting his ferocious forehand cross-court with heavy top spin, Nadal would drive Federer back, forcing the Swiss to play his backhands at shoulder height.

Now Federer is fighting fire with fire by taking the ball early and going for his shots. He rarely slices his backhand and instead hits through the ball, usually with great power.

“I’m definitely trying to play creative tennis, trying to go for my shots,” Federer said. “I’m able to take the backhand earlier, which allows me also to hit more backhand winners off the baseline.”

Federer in action against Nadal during Sunday's final in Miami (Getty)

What does Federer think about the suggestion that he might never have played better? He finds it hard to agree with that contention given the way he swept all before him in his early twenties - between 2004 and 2006 he won 34 titles and lost just 15 of the 262 matches he played - but points out that the challenges provided by rivals like Nadal, Novak Djokovic and Andy Murray have forced him to keep improving.

“I think I play differently to when I was 24 and my technique has changed from when I was 19,” Federer said. “On the offensive side, overall, I think I’m definitely doing a few things better than I ever have.

“I do feel that I have improved. The game has evolved and I had to adjust and change. Overall I do believe I’m probably a better player than I was 10 years ago, but it doesn’t always translate into results per se, because other guys came up and did extremely well, like Novak, Rafa and Murray.”

Federer believes he has improved as a player in the last 10 years (G)

Federer’s willingness to learn has been crucial. Ivan Ljubicic, who joined his coaching entourage at the end of 2015, has encouraged the more attacking style. The former world No 3 also stayed positive last year when Federer took time out to recover from his knee problem.

“He was incredibly supportive and he always reminded me that the good times are going to come around,” Federer said. “He's also got a winner’s mentality, which I like. He wants me to win every single point, every single match.”

With Federer completing his third “Sunshine Double” of the Indian Wells and Miami titles, it is no wonder that that there is speculation as to whether he can add to his all-time record total of 302 weeks at the top of the world rankings, particularly as Murray and Djokovic, the top two in the list, have had their troubles this year and are currently nursing elbow injuries which forced them to miss Miami.

Federer stunned the tennis world to win the Australian Open last January (Getty)

Federer, nevertheless, knows that, four months short of his 36th birthday, he cannot take his fitness for granted. Rather than targeting a return to world No 1, he has his eyes on more Grand Slam glory, particularly at Wimbledon, where he needs one more title to become the most successful male singles player in All England Club history. William Renshaw and Pete Sampras currently share with Federer the record of seven titles.

Wisely, Federer has decided not to put his body through the slog of a full clay-court season. He said on Sunday night that his next appearance is likely to be at the French Open, which starts on 28 May, which would see him miss the clay-court Masters Series tournaments at Monte Carlo, Madrid and Rome. Even then it would be sensible not to rule out success at Roland Garros, where he has reached five finals, losing four of them to Nadal.

However, it is not inconceivable that Federer would skip the whole clay-court season, including its climax at the French Open. The Swiss admits that he had knee trouble playing on clay last year. His current plan is to keep training on hard courts until a fortnight before Roland Garros.

Federer is crowned champion at the Miami Open (Getty)

Wimbledon and the US Open have always been Federer’s happiest hunting grounds. In planning his comeback this year the season’s last two Grand Slam events – and Wimbledon in particular - were always his highest priority. He has already committed to play in two grass-court tournaments before Wimbledon, at Stuttgart and Halle.

“Unfortunately, I can't do it all,” he said. “I can’t chase the Davis Cup and the Slams and play all the Masters 1000s. At some point something has to give, unfortunately. I wish I could do it all like when I was 24 years old. That’s where I have to take some important decisions.”