Gilles Muller, seeded 16th at the ongoing Wimbledon tennis tournament has given an insight on how he dug deep to overcome Rafael Nadal in a thrilling Fourth Round tie on Monday.

The Luxembourg journeyman had the last laugh over Nadal in their marathon clash that lasted over 4 hours at the center court.

Despite the attempted fightback by Nadal, the tie ended in 6-3, 6-4, 3-6, 4-6, 15-13 in favour of Muller.

 "Tired! It was a long match. I did really well in the first two sets then Rafa stepped it up and in the end it was just a big battle," said Muller, who won on a fifth match point, more than an hour and a half after his first.

In a pulsating final set, which stretched to 95 minutes, Nadal saved two match points in the 10th game and two more in the 20th.

In between, Muller had to fight off a breakpoint in the 13th game and four more in the 19th.

Nadal was always chasing the score and he finally cracked in the 28th game of the decider when he went long with a return.

"I said, 'just give it a shot, go 100%', and it's a great feeling to be winning that match," added Muller whose only other win over the great Spaniard also came at Wimbledon, 12 years ago.

Muller will now make his first Wimbledon quarter-final appearance against former US Open champion Marin Cilic on Wednesday.