Barnsley are anxiously waiting to find out the extent of Kieffer Moore's injury.
The striker suffered a knock in the Reds' stunning 4-0 win at Peterborough on Saturday and had a scan on Monday with results due later in the week.
Moore came off 10 minutes before the break having tried to play on after suffering the injury and the immediate prognosis was not too good, being seen was seen wearing a protective brace on his leg after the game.
“It's not the best moment, Kieffer Moore's injury,” boss Daniel Stendel said.
“At the moment I don't know but it is not so good. We will find out more and hope he can play next weekend. He is a very important player.”
The seven-goal striker looks like joining Cauley Woodrow in the treatment room and Stendel has urged the likes of Jacob Brown, who replaced Moore at London Road and scored, and Victor Adeboyejo to grasp their opportunity.
Stendel added: “Cauley Woodrow is injured, we hope he can come back and then we have more options in the striker positions.
“Jacob Brown was good, we have Victor and this is the time that other players can show they can play in the starting XI.”
Left-back Ben Williams knows all about taking your opportunity as the rookie earned his first start following injuries to Dani Pinillos and Zeki Fryers.
The 19-year-old put in an impressive performance and received special praise from Stendel.
“I am very proud of all the players, but a little bit more of Ben Williams,” the German added.
“It was his first game, we talked with him in the morning and told him he was going to play and he was so good.”
As first senior appearances go, a 4-0 win at a promotion rival is not a bad one and Williams was in dreamland.
He said: “I have to pinch myself to make sure I'm not dreaming. After all the hard work I've put in it makes it all worthwhile.
“To get a start against second in the league and come away with three points and a clean sheet, you can’t really get better than that.
“The Gaffer told me to go out there and treat it like any other game and that’s exactly what I did.”