Jamaal Lascelles has limped out of Newcastle United's FA Cup tie against Luton Town.
The club's captain left the field after Ayoze Perez put Rafa Benitez's side 1-0 at St James's Park.
Lascelles was limping in the first half-hour, and Benitez asked him if he was able to continue.
And United's manager made the change after Perez put United ahead in the third-round tie.
Lascelles led out a strong team for the tie, which drew a crowd of 47,069.
Another goal from Perez and a strike from Jonjo Shelvey gave Newcastle a 3-0 half-time lead.