Swansea City are keeping fingers crossed over Daniel James after the winger limped off at Derby.
The Swans played the last few minutes at Pride Park with only 10 men after James picked up a hamstring injury.
Graham Potter had already used his three substitutes, hence his team ended the game a man light.
But Potter is hopeful that James, who has been in fine form, has not picked up a serious problem.
“Dan just felt his hamstring,” said the Swans boss.
“He has had problems before – he is a sprinter – but it was more that it didn’t feel right than anything.
“We lost Dan when we had just scored the goal. That sums up a little bit where are at right now.”