The Saints entered the record books for all the wrong reasons. It was the worst loss in their 134-year existence, and they now hold the record for the biggest home defeat in Premier League history.
"My reaction is that I must apologise for this performance. I take 100 per cent responsibility for what happened today," Hasenhuttl said at full-time, per the Mirror.
"This was absolutely no-go in any way and I want to say that I am proud of the fans - they were staying in the stadium until the end of the game - because it was not easy to watch it for anybody who is following us.
It was a miserable night for every single Southampton fan.
- The 15 biggest wins ever in the Premier League
- Leicester equal biggest win in PL history
- Check out our new GIVEMESPORT homepage
But spare a thought for 13-year-old support Tom Sherburn, for it was an extra special occasion for him.
It was Tom’s first ever Southampton game. And it ended in disaster.
Image via: BBC Sport
Tom and his family travelled for four hours from Somerset to Southampton. Tickets to the game were a Christmas present from last year.
"He'd waited so long for it,” Tom’s dad Mike told BBC Sport. “Just walking to the ground, you could see his face light up at how fantastic it was going to be, with all the swirling rain and the lights and TV cameras and lots of people.
"It was wonderful. And that lasted 10 minutes.”
Southampton were 1-0 down after 10 minutes and had Ryan Bertrand sent off two minutes later.
Leicester went on to score four more goals before half-time.
"We saw people leaving at 12 minutes in, and I am quite proud of him as the first time he said 'can we go home now dad?' was in the 80th minute," Mike added.
"He was shouting encouragement, telling the players to get in space and if he can do that, he can survive being a football fan.
“He is an emotional kid, he feels stuff and I was worried after the first goal went in, but he said he wants to go back when we play a team we can beat, like Watford!"
Tom’s ability to remain positive even after watching his team capitulate is remarkable.
He was apparently happy that he got to witness a record-breaking game, see England players and witness two hat-tricks.
And he can take comfort in the fact that it will never be this bad again. Probably.News Now - Sport News