Chelsea head coach Antonio Conte believes his team has been transformed since the 3-0 loss at Arsenal on September 24.
The Italian accepted a 2-0 defeat to Spurs with good grace and felt that the north Londoners had been able to beat a strong team showing fight.
Conte said: "After a defeat it's always very difficult to know your reaction. But, I think this defeat is totally different.
"It's normal when you lose a game to try to think why.
"I think that this defeat is totally different if you compare our defeats in September.
"Against Liverpool and Arsenal at that moment we weren't a team.
"Tonight we showed we are a team. We are a strong team. It's important.
"We tried to fight. We tried to win the game, or not lose.
"I saw the right will in my players, but don't forget that tonight we played against a really good team, a tough game."
Conte rued the moment which saw Diego Costa and Pedro squabble in the first half.
He added: "This is a normal situation. A good chance for us and we wasted this chance."
Conte switched to a 3-4-3 formation at half-time of the Arsenal loss and it has served his team well since.
"To stop us the other teams are changing formation," Conte said.
He says six teams - Tottenham, Manchester City, Manchester United, Liverpool, Arsenal and Chelsea - are in title contention. United are 10 points behind Chelsea in sixth.
Conte said: "The situation is very clear. There are six teams that can fight for the title or a place in the Champions League.
"I'm sure one of these six teams will be champions."