England coach Sven-Goran Eriksson fears Michael Owen's World Cup is over after the striker suffered a knee injury in the opening minute of the 2-2 draw against Sweden.
Owen will undergo a scan on Wednesday, but the fact he was stretchered off suggested the problem is serious.
Asked if the Newcastle United star would miss the rest of the tournament, Eriksson replied: "Maybe, I hope not but it doesn't look good at all."
The England boss had plenty of other worries after the match, having seen his side twice surrender the lead as the back four struggled to cope with Sweden's set-piece deliveries.
"We didn't defend well at set-pieces. We will have to work on that before the next game. Sweden are very strong at that but anyhow, we have to do that better in the future," he said.
"We did well in the first half but then Sweden did better in the second half and they scored from two set-pieces - of course we have to do better because we cannot concede goals like that.
"But the most important thing was to win the group and I'm very happy about that. That's what we wanted to do."
The draw saw England clinch top spot and set up a last 16 tie against Ecuador and was also enough for Sweden to progress to the first knockout round, where they will face Germany.
Sweden coach Lars Lagerback was delighted to make it out of the group stage, but claimed his side's second-half display should have seen them secure victory.
"England played very well in the first half," Lagerback said.
"We wanted to win the ball too early and lost many one-on-one situations. It was better in the second half.
"We almost deserved three points. We were the better team in the second half."