Swiss ace Roger Federer seems mighty impressed by his arch-rival Rafael Nadal’s resurgence as he backed that Spaniard to add more titles to his tally of 14 Grand Slams.

Nadal, who struggled to get going in the first part of the season, found his foot in the latter half, finishing the year with a decent 61-20 record that struck Federer’s eyes.

Speaking to India Today, 17-time Grand Slam champion Federer said: “Rafa seems to be back in a big way. He’s doing great. I think he will be very strong next year and will be very hard to beat.”

Federer, who ended his three-year drought of a win over Nadal with a three-set conquest in Basil this year, envisaged his traditional rival to pull off “one or two” majors in the upcoming season.

“I had a wonderful final against him in Basel. Perhaps, he will be able to get one or two Grand Slams next year,” added the Swiss.