After the disappointment of losing at Wembley to Monaco in their Champions League opener Tottenham bounced back in the best possible fashion by beating Sunderland 1-0.

The scoreline suggests a tight game but Jordan Pickford rightfully won the plaudits that afternoon after his string of saves kept the score respectable.

That win saw Tottenham continue their unbeaten start and they now move to third in the Premier League. There is still a long way of the season to go but Spurs fans would no doubt be delighted if they could stay come the end of the season, especially with what is set to be a much tougher campaign this time around.

Mauricio Pochettino will probably dismiss any talk of the top four at such an early stage of the season but let's now look at the three reasons why Tottenham can continue their top four run...

A mean defence

Tottenham Hotspur v AS Monaco - UEFA Champions League Group Stage - Group E

Tottenham's defence is once again proving to be very strong. They have only conceded two goals in their first five matches and are yet to concede from open play. A defence that gave very little away last season was the bedrock of that impressive Tottenham side and it looks like being the case again this time around.

With Jan Vertonghen and Toby Alderweireld at the back they arguably have the best centre-back partnership in the Premier League and with England internationals Kyle Walker and Danny Rose on either side, this is a defence to be reckoned with.

Not only that but now this defensive tandem has had a season to bed in, they will look to be even stronger this time around.

But it's not just the four names mentioned above. One of key strengths last season was that each player could be replaced with minimal disruption to the side. Kevin Wimmer, Kieran Trippier and Ben Davies are all more than able deputies and that will be important throughout the course of the campaign.

A squad game

Vincent Janssen

One of the criticisms that Mauricio Pochettino came in for last season was the fact that he was perhaps too loyal to his key players. This led to key players probably playing a few too many games and it really started to show towards the final few games of the season.

The mitigating circumstances could well be the fact that Pochettino didn't quite have the squad depth in which to rotate as much as he liked to - especially in midfield and attack - but with the new summer signings, it looks as if that issue has now been rectified.

With Moussa Sissoko joining other new faces Victor Wanyama and Vincent Janssen, it means Pochettino has options and he has already shown this season that he is not afraid to bench such stars as Dele Alli and Christian Eriksen. With there now being competition for places in the squad, this should invariably raise everyone's game as they bid to make the starting eleven.

It also shows that Pochettino is willing to learn from his faults from last season and that can only be a good thing as it shows that he's a manager who is always looking to adapt and improve. A good manager can identify weakness in his players but a great manager can identify weaknesses in himself.

Goals across the board

Lamela

Harry Kane may have started slowly but even though he has only scored two league goals, it hasn't been to the detriment to the side. The fact that the load has been spread around the Tottenham side has been a real positive and it's going to be all the more important now that Kane is out for an unconfirmed amount of time.

With the addition of Vincent Janssen to the squad they finally have that backup striker that they have been craving for so long, and the aim for Janssen now is to get that first goal and make sure he doesn't follow in the footsteps of the last No.9 they had at the club - Roberto Soldado.

With Heung-min Son bagging a double at Stoke and goals coming from Lamela, Wanyama, Rose and Alli, it shows that Tottenham are capable of scoring goals throughout the side and that will somewhat soften the blow of Kane's recent injury.

As mentioned previously, with their defence being so tight, it means that they don't necessarily have to score a hatful of goals to win a game, as victory against Sunderland proved. But should they be required to do so then they certainly have enough players who know where the net is in the hunt for all important league points.

Ultimately, if you finish in the top four  for one season, it's no good just playing well in that competition, you need to make sure you play well enough to get back there year after year. It's not going to be as easy for Tottenham this time around but they certainly have the means in which to do so, and it's certainly not going to be dull in the last few months at White Hart Lane.