Portsmouth manager Paul Hart allayed fears over goalkeeper David James' fitness after the England international was injured in the warm-up prior to the 1-0 defeat at Stoke.
The 39-year-old had a knee operation at the end of last season and has admitted he does suffer with "irritation", but the latest setback is a calf problem.
Only a week ago James said he was confident of being fit for this summer's World Cup after England coach Fabio Capello insisted he would not take any players to South Africa who were carrying injuries.
Hart said it was too early to assess the seriousness of this latest injury.
"He pulled a calf muscle warming up," he said. "The World Cup is in June, a calf muscle is usually about three weeks. I think he will be fit for the World Cup.
"We are managing the situation (regarding James' knee) at the moment and up until now he has been out on the pitch.
"He has to do some gym work to help him through it but he has been there and it has not been a real problem."
Hart felt his side deserved more out of the game, especially after Kevin-Prince Boateng missed an eighth-minute spot-kick.
"You can't legislate for missing a penalty," he added. "I thought we played well, defended extremely well and controlled the game for most of it.
"To say we are disappointed not to have something from it is an understatement."
