ST. POELTEN, Austria (AP) _ Thomas Muster, forced to withdraw from an ATP Tour event because of an ankle injury, is expected to be at full strength next week when he begins his title defense in the French Open.

Dr. Helmut Obermoser, the tournament physician for the Raiffeisen Grand Prix, said today the inflammation in Muster's right ankle had subsided and he would be begin ``light training'' Saturday. Obermoser said the Austrian clay-court star will be at ``100 percent'' in Paris.

Muster, ranked No. 2 in the world, sprained the ankle Thursday while warming up with Javier Sanchez before a scheduled quarterfinal match against Andrea Gaudenzi. In today's French Open draw, Muster was given a first-round match with Denmark's Frederic Fetterlein.

Muster's coach, Ronald Leitgeb, said Thursday he might ask French Open officials to schedule the match for Tuesday, but was far less concerned after consulting with Obermoser.

``At the moment the therapy plan is the most important thing. We won't necessarily insist on Tuesday,'' Leitgeb said.

Muster, 28, is 97-3 on clay over the past two years and won the Italian Open for the third time Sunday. He has won 38 clay-court titles, including 11 in 1995 and five in a row this year.