The Argentinian replaced Nigel Adkins at the helm in controversial fashion last month but has been quick to silence doubters.
Last time out Southampton embarrassed reigning champions Manchester City 3-1 and before that drew at Wigan and lost narrowly at Manchester United.
Sir Alex Ferguson said Pochettino's men were the best team to play at Old Trafford this season and the manager is hoping for a similar performance when they come up against former Saints manager Alan Pardew at St James' Park on Sunday.
"I think it is very important for the players that played those two away games to know they played really well," he said.
"I am not in it for me, I am in it for the team. The fact that the team got those two good results playing well is great.
"The victories are always down to the team and what is clear is that we will got to Newcastle looking for the three points."
Only goal difference separates Southampton and the Magpies, who suffered a 2-0 defeat at St Mary's in the corresponding fixture.
"We have the same expectations and ambitions," Pochettino said. "For example we want to go to Newcastle and get the three points.
"We know that whatever has happened in football in the past doesn't count for anything in the future, so we will keep moving forwards.
"We are going to encounter a very attack minded team who get forward quickly.
"But we go with the same set up that we have been playing with and the intention of getting the three points.
"They are a dynamic team who get forward quickly, especially with their latest signings, they have grown with their speed in how rapidly they can attack."
Pochettino will be boosted in the north-east by the return of Luke Shaw and Gaston Ramirez after they missed the win over City with niggles.
Adam Lallana could also get his first start since December 8 at St James' Park, while January signing Vegard Forren may make his debut.
"It's down to a numeric aspect," Pochettino explained when asked why they have not started since he arrived.
"Yes, they are 100 per cent fit to play but at the same time we have 23 or 24 players available.
"I am the manager so in the end I will have to make some decisions as to what 11 will be starting in the game.
"Perhaps the same team will play against Newcastle that played against Man City, perhaps not.
"We pay special attention as to what we see during the training sessions. We see how individuals are doing so it is not a problem for us to make a decision."