Tottenham defender Jan Vertonghen believes Premier League sides will take more notice of his side due to their impressive start to the season.
Andre Villas-Boas' side have won four of their five Premier League openers - with their only defeat of the campaign coming against north London rivals Arsenal.
Tottenham are currently joint leaders of the Premier League - alongside Arsenal - and Vertonghen believes that their early form would have made teams sit up and take notice of them.
Speaking to BBC London 94.9, Vertonghen said: "We have a lot of confidence. I think everybody can see we don't concede a lot of goals.
"We score a lot of goals now and have a big squad. I think other teams are watching [us]."
Tottenham face a tough test on Saturday as they play host to Jose Mourinho's Chelsea and Vertonghen has called on his side to make amends for their defeat against the Gunners.
"We lost to a direct opponent the other week against Arsenal and we want to do better this time," added Vertonghen.
"Last year we lost at home [against Chelsea] because of quite a lot of injuries in my opinion. We want to do better this year."
Spurs boss Villas-Boas spent over £100m during the course of the summer to bolster his squad and Vertonghen believes the Portuguese tactician will need to use all the players at his disposal if they are going to compete for European and domestic honours.
"I have never played two games in three days," he added. "It was quite a test and I am very tired at the moment.
"We can be happy. Last year we were kicked out of this tournament in the second round and we wanted to better that this year.
"It is tough but we already need everybody. We have five or six people who are injured and couldn't play.
"Some players didn't even travel and quite a lot of them will play on Saturday. I think we needed this big squad, for sure."