Harry Redknapp confirmed that Michael Dawson suffered an ankle injury against Newcastle but won't know the full extent of the problem until he gets the results of scans.
The defender - back in the side in Ledley King's absence - was in dominant form up against the aerial threat of Toon striker Andy Carroll but landed awkwardly just after the half-hour.
He stayed down and had to be stretchered off.
'Daws' later limped out of White Hart Lane on crutches with his left foot in a protective boot.
"It's either ligament damage or, hopefully not, a fracture but I wouldn't want to say at this point," reported Harry after our 1-0 win.
"He's going to have a scan and we'll have to wait and see. It looked quite nasty though.
"It was a big blow because he dealt with every every header in the first 25 minutes or so and looked a tower of strength."