Leicester City were held to a 1-1 draw by Manchester United at Old Trafford and will have to wait to complete their fairytale Barclays Premier League triumph.
The Foxes needed a win to be crowned champions with two matches to spare.
Claudio Ranieri’s unchanged side had a passive start and Anthony Martial capitalised by opening the scoring but captain Wes Morgan headed a 16th-minute equaliser.
Leicester will emerge as champions at home to Everton next weekend if Tottenham Hotspur fail to beat Chelsea on Monday, while any victory from City or slip-up by Spurs will complete the remarkable story that Sunday’s draw left dangling.
United, who could not capitalise on a late red card for Danny Drinkwater, lost ground on Arsenal and Manchester City in the race for a top-four spot but edged ahead of West Ham United into fifth.
Leicester City manager, Claudio Ranieri, was delighted with his players for “giving their heart and soul” after his side overcame Southampton 1-0 to move seven points clear at the top of the Barclays Premier League.
Wes Morgan’s first-half header earned them a hard-fought victory against Southampton.
The Foxes skipper powered home Christian Fuch’s cross from the left as Claudio Ranieri’s men moved a step closer to the Premier League title.
“We believe in what we are doing – it’s a magical season,” Ranieri said. “Next year will not be the same; we know that.”
He added that the reason his side are flying so high at the BPL summit is because of their commitment to the cause.
“Other teams can win 3-0, 4-0, but we cannot do that,” he said. “We have to fight every match to win 1-0.”
The Italian also paid tribute to his captan Wes Morgan, whose first goal since May earned the victory, saying he had to give his captain some time off recently as he had had no break since and was away on international duty last summer.
“He is a very strong man,” he said. “He is an example for all of us.”
However, Saints boss, Ronald Koeman, would feel aggrieved that the visitors were denied a penalty beforehand when Sadio Mane’s goal-bound shot struck the arm of Leicester defender Danny Simpson.
The win means Leicester need four wins from their remaining six games to wrap up the championship.