Gareth Southgate described the reaction of some England supporters towards Harry Maguire as "an absolute joke" after the defender was booed before kick-off on Tuesday.
Manchester United captain Maguire started the Three Lions' victory against the Ivory Coast, as goals for Ollie Watkins, Raheem Sterling and Tyrone Mings secured a 3-0 success at Wembley.
The centre-back has been a key performer for Southgate since breaking through into the senior set-up, and he was named to the UEFA Team of the Tournament for his performances at Euro 2020.
Yet since scoring in England's penalty shoot-out loss to Italy in last year's final, Maguire has struggled for form at club level, and has often found himself a scapegoat for United's on-field issues.
Those frustrations translated themselves into audible jeers from sections of the home support on Tuesday, leaving Southgate to launch a passionate defence of his player at the full-time whistle.
"I thought the reception was a joke, an absolute joke," manager Southgate said. "The way he has performed for us has been absolutely phenomenal.
"I don't get it. We're either all in this together or we're not. He's in an England shirt and [...] you support a player in an England shirt regardless.
"When you've played at the level he has for us and put the performances in he has, it should be total commitment behind him. I don't get it at all.
"His performance was pretty faultless really. He stepped out from the back really well for his first goal, was involved in the second one too.
"The team are totally united. We recognise everyone has difficult moments, but he's a top player and he will come through it.
"They are real England fans and some are influenced by whatever – social media or players that played previously who are influencing opinion.
"The club situation is obviously very difficult, but he's in an England shirt. I remember decades ago a few players being booed in an England shirt, and it's never been acceptable to me. Fans should always get behind their team."
Jack Grealish also came to Maguire's defence, with the Manchester City attacking midfielder hailing the defender's creative prowess as crucial to the Three Lions' success against Ivory Coast.
"Personally I think it's ridiculous," Grealish said. "Harry's been unbelievable for this country. Our first two goals have come from him.
"Not every centre-back can have those qualities. It was ridiculous for him to get booed, and it wasn't something the team liked one bit."
Ten Hag sees positives from Man Utd's season as he vows to bring FA Cup back to Old Trafford
Erik ten Hag is taking the positives from Manchester United's season, as he aims to win the FA Cup.
United have endured a difficult campaign, though they kept their European qualification hopes alive by beating Newcastle United 3-2 on Wednesday at Old Trafford.
Ten Hag took the microphone to speak to the fans after full-time, saying: "You are the best supporters in the world. Thanks for your support.
"I promise you that those players will give everything to get the cup and bring it to Old Trafford."
United face rivals Manchester City at Wembley on May 25, and speaking to reporters, Ten Hag – whose future is uncertain – sees no reason not to take some positives from the campaign.
"I see the positives, I see that this team is developing, I know the reasons why we are not performing," Ten Hag said.
"No team will perform when the whole back four is not available, across the season.
"Even striker Rasmus Hojlund, three times injured, [Marcus] Rashford, also injured, so we have had our problems across the season and that has a negative impact on the results.
"You see players performing and you see players progressing like the youngsters and that is very positive, there is a high potential in this club.
"So, there are also many positives in this season, but I can't mention this. You know why. At the end of the day, we have to win trophies. And in the Premier League, and in the Champions League, we didn't perform what people expect from us."
United sit eighth on 57 points, level with Newcastle but three behind sixth-placed Chelsea. The Red Devils face Brighton in their final game of the season on Sunday.
Getafe 0-3 Atletico Madrid: Griezmann treble seals Champions League qualification
Atletico Madrid's Antoine Griezmann scored a hat-trick in a 3-0 LaLiga win at Getafe on Wednesday as Diego Simeone's side sealed Champions League qualification.
The France star opened the scoring in the 27th minute from Rodrigo De Paul's throughball and had his second shortly before half-time, flicking Samuel Lino's pinpoint pass past Getafe goalkeeper David Soria.
Griezmann completed his hat-trick in the 51st minute with a fine finish under Soria's legs, with Lino claiming his second assist by playing Los Colchoneros' all-time leading scorer into the area.
It was Griezmann's second hat-trick of the season, after he also netted three times in a 3-0 win at Celta Vigo last October.
With two games remaining, Simeone's side are now on 73 points in fourth, 11 ahead of fifth-placed Athletic Bilbao, who lost 2-1 against Celta Vigo on Wednesday.
Data Debrief: Griezmann repeats the trick
Griezmann is the only player to score two hat-tricks in LaLiga this season, and the only player to net a treble with all three goals coming on his left foot.
He might need to go even further to put himself in Golden Boot contention, though, with his 16 goals for this term putting him behind Artem Dovbyk (20), Jude Bellingham, Alexander Sorloth (both 19) and Robert Lewandowski (17).
Fernandes looking for strong finish to Man Utd's season
Bruno Fernandes says Manchester United must "finish the season in the best way" following their 3-2 win over Newcastle United.
The United youngsters played starring roles, with Kobbie Mainoo, Amad Diallo and Rasmus Hojlund getting all three goals to close the gap to Newcastle in the table.
Anthony Gordon and Lewis Hall both netted for the Magpies, with the latter setting up a nervy finish with his stoppage-time effort, but their lack of clinical edge meant United earned all three points.
Erik ten Hag’s side avoided a third consecutive defeat, and what would have been a record-breaking 10th home loss of the season, and Fernandes insists they must find a way to finish positively.
Speaking to Sky Sports, the United captain said: "Obviously the job isn’t finished yet. We still have one game in the Premier League, then the biggest game of the season, the FA Cup final.
"It has been a tough season. The table shows that, and we are all aware of that. The fans have been amazing and behind us all season. We all appreciate what they have been doing for us.
"We want to do better and do differently. They [fans] have been amazing for us, and we had to do something. We have been trying, but results don’t show that. We have been working hard and everyone has been giving their best. It is not enough, and we have to do more.
"We still have two games to go, and we have to finish in the best way.
"It doesn’t exist, a captain's performance, it is a team performance. I am no different from anyone just because I have the armband. I always try my best, and we always do the best we can for the club – nobody hides that we play for a big club, and we have to lift our standards every game."
Despite returning to winning ways, United have now conceded 58 Premier League goals this season, their most across a single campaign in the competition.
Ten Hag was keen to turn the focus away from their struggling defence and onto the attacking players instead.
"Fantastic. Great goals. But it was a team effort how we made the goals. But I'm always happy at young players who are progressing very good and scored some brilliant goals," he told BBC Sport.
"Newcastle have a lot of physical power, and you have to match that, but you also have to play football. We had found the really good balance in this.
"It's always nice to win any game. It's important to win the last game at Old Trafford this season. The fans deserve this because they've had difficult times and always stayed with us.
"We are here together. We wanted to pay the fans back."
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