Newcastle United almost guaranteed their Premier League status for another season with a tremendous victory over Leicester City at King Power Stadium.
Ayoze Perez, who was excellent, scored a sublime header in the first half to deliver the victory to the men of Rafa Benitez, which took them beyond the 38 points that the manager of the Magpies has declared will be enough to ensure their future high level.
This 1-0 victory was also United's first win on the road in the Premier League since mid-December, and he faced a Leicester who had registered four consecutive victories under new manager Brendan Rodgers.
With four games remaining, Newcastle is 10 points ahead of Cardiff City, which has two games in hand, and has risen to 13th place in the table, ahead of AFC Bournemouth in the goal difference.
Here, NUFC writer Chris Waugh shows us what we learned from a memorable night in the East Midlands …
Manquillo rises to the occasions as Yedlin is torn to pieces.
When asked about the sanction DeAndre Yedlin conceded against Crystal Palace during the 1-0 defeat last weekend, Benitez noted during his pregame press conference that Newcastle "wins together and loses together" and declined to point to the American.
But it was obvious with the selection of Benitez's team at King Power Stadium that the United manager was angered by the fact that Yedlin did not follow specific instructions on how to defend against Wilfried Zaha. The players had been shown videos of how Zaha went on, reached the touchline, and still, Yedlin fell in love with him and committed an unnecessary foul on the Ivorian.
Instead of Yedlin, Javier Manquillo entered on the right side of the right side, while Benítez resisted what he had described as the "temptation" to go from a central defense of three men to a four-man plan.
Paul Dummett came in as left center back to replace the injured Florian Lejeune, and, along with Manquillo, they were the only new faces on the sideline.
After a nervous start, when he allowed Ben Chilwell to enter and shoot, and conceded possession a couple of times, Manquillo grew up in the game and, like the rest of his teammates in the Magpies, played well during the first 45 minutes.
Dummett, meanwhile, positioned himself well with Jamaal Lascelles and Fabian Schar; It is possible that the Welshman does not have the ability of Lejeune in possession, but he is an excellent defender, and he clung to his task expertly.
Each magpie played well in the East Midlands, including those that often do not.
Diame and Shelvey futures may be uncertain, but Hayden will be the biggest failure
Another game, another match where Jonjo Shelvey simply had to settle for a place among the substitutes.
Not since November 3, the England midfielder started a Premier League game for Newcastle, and Benitez's refusal to name Shelvey in United XI becomes more curious with each pbading week.
With Sean Longstaff injured, and Isaac Hayden in such a brilliant way, he appears to be the former England Under-21 international plus one from Ki Sung-yueng or Mo Diame in the engine room at the moment.
And, even though Diame was recovering from a minor hip problem, Ki continued in the midfield, which also generated more questions about the long-term future of the Senegal international.
It is understood that Diame has two starts before initiating an automatic extension of the 12-month contract, something the club is willing to give her, but would prefer a new two-year contract.
It is believed that the same 31-year-old player wants a two-year contract, or that they release him in a free transfer this summer. However, Benitez was adamant that the situation of Diame's contract on Thursday did not affect the selection of the team.
Now, however, Diame has only four games left to achieve those two starts, so both her future and Shelvey's beyond the summer are uncertain.
What is undoubtedly, however, is that Hayden will be a great fault if, and when, he leaves during the summer, with the 23-year-old ready to approach his baby in the southwest.
Ki was also very good against Leicester, but it was Hayden's constant anguish that repeatedly altered Leicester's pace.
Benitez can apparently entertain doubts about Shelvey, Diame's own future is also uncertain, but the biggest failure from midfield if he leaves this summer at this point would definitely be Hayden.
Perez loves to score at King Power Stadium.
There's something at King Power Stadium that brings out the best in Perez; It is a field in which he scores impressive goals.
Last season, the Spaniard scored a goal contender for the season when he threw Kasper Schmeichel majestically during Leipzig's magnificent 2-1 win over the Magpies.
On this occasion, the goal was not of the same caliber, but it was still an excellent attack, and one that few Premier League forwards could have scored.
After Fabian Schar showed a great vision to send Matt Ritchie to the left, finally the back wing of the Magpies received possession and curved a lovely cross towards the front post.
Perez showed an immense desire to advance to get the ball ahead of the Premier League's winning captain, Wes Morgan, and deflect a looping header over Schmeichel and toward the far corner of the net in the 32nd minute.
He was the one who deserved the United after an excellent display in the first half, and Perez once again proved his worth for Newcastle.
The forward has been linked with a move away from St James' Park, but has been directly involved in four of Newcastle's last six Premier League goals, which include the writing of three of them.
The arrival of Miguel Almiron has brought out the best of Perez and, when the Spanish is in this type of form, highlights the signing of a bargain for only £ 1.5 million in 2014.
Salvation for the States – but desperation for the Falcons
Whether by accident or design, Leicester and Newcastle faced each other in rugby and football at about the same time on Friday night.
While the magpies faced the Foxes at King Power Stadium, the Falcons were hosting the Tigers in a mbadive Premier League relegation clash at Kingston Park.
While Newcastle's Benitez team came into their game needing one more victory for everyone, but to guarantee their status in the Premier League, the Dean Richards Falcons had to defeat the Tigers to keep alive their hopes of survival in the Premier League. League.
The local teams triumphed on both occasions, with United defeating City 1-0, and the Tigers triumphing 27-22 over the Falcons.
For Richards, that could be depressingly the game that condemns them to relegation, but Benítez's Magpies will remain the best in the next quarter.
A perfect visitor performance brings United to the magic mark of 38 points.
Benitez has stated regularly that 38 points should be enough to survive and, as Newcastle won its first away win since mid-December, the celebrations at the other end could say that his supporters believe his Premier League status is now secure.
With Cardiff City on the third floor now 10 points behind, and with a much lower goal difference, the fact that the Bluebirds have two games at stake at United is irrelevant.
There are four teams that separate Newcastle from the relegation zone, and now they will not go down five places.
Now, United can focus on Benítez's future and make sure his manager is still on the spot at the start of the 2019/20 season, when Newcastle will remain part of the Premier League.