France's Richard Gasquet admits he feels anxious about how he'll play at next week's Estoril Open in Portugal after a brief injury layoff.

WTA: Robson Aims For French Open Return

Speaking to French newspaper L'Equipe, Gasquet revealed he was diagnosed with a small herniated disc that forced him out of several recent events. He has spent the last few weeks recuperating and spent most of this week practicing in Barcelona, Spain.

"For now, all is well. I have no pain but I'm not 100%," Gasquet said. "It is only competition that will tell me if I'm completely recovered or not. "

Now ranked No. 27, Gasquet leaves for Portugal feeling a little reassured about his progress but still somewhat uncertain.

"I do not know how it will happen when I have to give my all on the court," Gasquet added.

Gasquet retired in his last two matches - a quarterfinal in Dubai against Roger Federer and a second round match at Indian Wells to Michael Berrer. Before the injury, Gasquet claimed his 11th career singles title in Montpelier.

The Estoril Open starts on Monday, April 27.