Newcastle captain Alan Shearer fears his career may be over due to a knee injury he picked up on Monday.
The forward was on the scoresheet in the win over Sunderland at The Stadium of Light, but vacated the scene 20 minutes from time following a stiff challenge from Julio Arca.
Shearer looked in real discomfort when leaving the field and will undergo a scan later in the week.
There are just three games remaining before Shearer hangs up his illustrious boots and the veteran feels he may never play again.
"It does not look good," Shearer told Sky Sports News.
"I think someone fell on me and I twisted awkwardly. I may have a tear in the medial ligament and that would be it for me if it is the case.
"It is sore at the moment and does not look good.
"I am keeping my fingers crossed, but it is certainly sore at the moment."
Shearer admits that if his career ended on Monday, it was a nice way to bow out.
"It's a great way to go out if it is," he said on Sky Sports News. "I've been waiting five or six years for a penalty against this lot because I missed my last one against Sunderland, and the wait was worthwhile.
"There was a lot of frustration and anger in that penalty."
He added: "It was a tremendous turnaround from us because we were rubbish in the first half and the manager has come in and let us know what he expected from us.
"To be fair to the boys they've delivered that in style."