The World No. 3 Roger Federer has withdrawn from the Madrid Masters Open with a back injury.

The Swiss international suffered the setback during a practice session at the weekend and has decided to opt-out ahead of the second Grand Slam of the year later this month.

“Sorry to the tournament for coming and leaving without playing,” Federer told a press conference, “I arrived and I was okay, and then I practised on Saturday and hurt my back a little bit in practice and then stopped early.”

ICYMI: @rogerfederer press conference withdrawing from @MutuaMadridOpen https://t.co/b25qkF57ba pic.twitter.com/tWgIvliP89

— TennisTV (@TennisTV) May 3, 2016

The 34-year-old has played just 13 times, winning 10 matches – across three tournaments this year.

Federer, however, announced he would be return to an action for the Rome Masters next week.