Wolves boss Mick McCarthy fears Sylvan Ebanks-Blake faces a spell on the sidelines after suffering an injury in the opening day defeat by West Ham United.
Ebanks-Blake picked up a hamstring complaint towards the latter stages of the 2-0 loss at Molineux and was unable to complete the 90 minutes.
McCarthy is now concerned that his leading scorer from last season is likely to be out of his plans for the next few weeks.
"It could be a few weeks," said McCarthy. "We won't know exactly until it settles down."
Goals from Mark Noble and Matthew Upson earned the Hammers the win, but McCarthy was satisfied with his team's showing on the club's return to the Premier League.
He said: "I thought we played well and gave a good performance, but I want to win. I do not think we have that many lessons to learn.
"What it did confirm is that when we play as well as that we have to take our chances and we have to score.
"If there is anything to learn that just playing well is not enough. That is what we should understand.
"West Ham went ahead with a quality finish and the England goalkeeper-elect (Green) has kept them in the game at the start of the second half. He did make some very good saves.
"Then we don't mark from a corner after we'd had a really good spell. It was an awful goal to concede.
"While that did not kill the game completely, it made unlikely we were going to get something out of it."