Tottenham Hotspur striker Emmanuel Adebayor says Spurs have to learn to close matches out.
Mauricio Pochettino's men could only manage a draw away at Sunderland despite taking the lead twice in a hard-fought encounter at the Stadium of Light.
The 30-year-old added that there will be room for concern if Spurs keep dropping points.
"It was worrying not to win," Adebayor told reporters.
"If it happens a lot it is a worry. The most frustrating thing was that we weren't rewarded for our performance.
"If you play badly and draw then it is quite good, as I am sure Sunderland's players will tell you.
"Their manager won't be able to believe they came away with a point. We've got to finish teams off when we've got them on the ropes.
"We didn't do that here. That's difficult to take after dominating the game."
"We're very disappointed because we should have won the game and Sunderland will be happy playing like that and taking a point.
"It felt like a good performance, we were in such control.
"But we will head back, watch it again and see where we went wrong because when you have so much of a game and don't win, it means something has gone wrong.
"If there was a positive, it was that we started both halves very well. But twice we have ourselves a platform and couldn't build on it."
