The big Argentine fifth seed, in the same half of the draw as world number one Rafael Nadal, was dominant throughout against the 36-year-old at his 66th consecutive Grand Slam tournament.

Del Potro felt he had played a near perfect match, with only five unforced errors, and had been able to carry through his game plan thanks to getting early breaks in each set.

“I soon made breaks in each set and on my serve I had no break points against. I played even better than I had expected,” said del Potro as he looks for his first Grand Slam title since winning the US Open nine years ago.

“Such a performance helps to look after your physical shape.”

Del Potro won in little over an hour, moving López about the court and only occasionally coming under pressure from the Spaniard, who showed glimpses of deft net play but made 43 unforced errors.

Asked if as a big server he had the game to upset reigning champion and favourite Roger Federer, Del Potro said: “One’s service is very important on grass but it’s hard to beat Federer on grass, like it is with Rafa on clay.”

“But in these tournaments anything can happen. Čilić was one who could trouble them but he made a lot of mistakes and is out,” he added, referring to the third seed’s upset loss to his fellow Argentine Guido Pella earlier on Thursday.

Del Potro faces Benoît Paire in the third round after the Frenchman upset 26th-seeded Canadian Denis Shapovalov.

He is expecting a difficult match against a talented opponent who can be unpredictable, capable of playing equally well at the back as at the net.

“Benoît can spring surprises, you don’t know what shots to expect from him, he’s very talented, so I’ll try to play better than today and I will have a big chance in the tournament if I beat Benoît,” he said.