Roger Federer has it all – the looks, the Rolex and the Gillette shaving foam, but the Swiss superstar made a stunning revelation this week about his long-standing rivalry with Spaniard Rafa Nadal.

Nadal, 32, has moved back to the World No.1 spot after lifting the French Open trophy for the 11th time last weekend at Roland Garros.

But, Nadal didn’t quite steal all of the headlines, with Federer, 36, making his comeback to pro tennis in Stuttgart on Wednesday after three months out, and he marked it with a win against German Mischa Zverev.

The French Open is a title that Federer has won just once in his career, but when asked if he would rather beat Nadal in the final to lift the trophy, or win Wimbledon for an impressive ninth time, the Swiss answered confidently, ‘Wimbledon’.

The Swiss has faced Nadal in the final of the French Open, played on a clay court, four times and has lost them all, but on grass and hard courts, Federer leads 2-1 and 11-9 respectively.

“If I could choose between beating Rafa (Nadal) on clay and then eventually winning Roland Garros or winning Wimbledon, I would choose Wimbledon.

"Three months [out] is a long time, it's longer than the year-end break - I'm super happy to be back on tour - it's been a great start.

"I'm very happy returning on good terms on to the tour. It's difficult, missed some chances maybe in the first set, he connected well at the right times. Then I found my rhythm."

He added: "I'm super happy to be back on tour - it's been a great start."

Federer has sat out the best part of the clay season this year and should be firing on all cylinders come Wimbledon next month, where Brit Andy Murray looks to make his comeback too after a lengthy rehab following hip surgery.

It could be Federer’s 21st Grand Slam title if he wins at Wimbledon this year, and what a story it would be after a battle to get back to full-fitness following the World No.2’s back injury sustained at the start of the year.

So Federer and Nadal could lock horns again at Wimbledon this year, and on Federer’s favoured grass court, it could make for a ninth Wimbledon title.