Shearer, who scored when England beat Tunisia 2-0 in the 1998 World Cup, knows just how important it is for a striker to get off the mark so early in a tournament.
Kane opened the scoring in the 11th minute which a poacher’s finish before securing the win with a back post header to claim all three points for England.
Shearer believed Kane would have been desperate to get involved in the tournament after watching a number of the game’s biggest stars get amongst the goals.
“I can’t stress enough the importance (of those goals),” Shearer said on BBC1’s World Cup Match of the Day.
“He’d have sat for the last week watching Ronaldo, Griezmann and Pogba scoring goals knowing we would be talking about him and tournament football.
“The manager gave him the captain’s armband for one reason, he’s the go-to player when someone has to make a difference.
“It will give him huge confidence to get off the mark with your first goal, bring the games on.
— England (@England) June 18, 2018
“That’s why Gareth Southgate named him captain. When the manager is looking for someone to do something, you want the captain to do something.
“They kept going and nobody can say they didn’t deserve the win.
“It would have been so difficult for them if they didn’t get the win.”
The win put England level on three points with Belgium who beat Panama 3-0 earlier in the day.
Having named his squad early, there was pressure on manager Southgate to get off to a winning start.
And Shearer felt the performance will give Southgate and his players confidence going forward.
“It’s a great night for Gareth,” Shearer said.
“He was under huge pressure and he will look at his own performance.
“He named his squad very early and the players knew the system, now could they go about getting the result?
“We wanted England to give us a bit of hope and a performance that had energy and chances so there are plenty of positives.”
Frank Lampard was relieved to see England get off to a winning start, but wished the margin had been greater.
“Only for the chances we missed in the first half, we would have won this game before half-time,” Lampard said.
“The first game is the one to win and I fully expect us to beat Panama.
— England (@England) June 18, 2018
“The crucial thing is taking the chances in this tournament.
“When you win you can put them (missed chances) to bed.
“The performance overrides that and maybe we’ll be more settled in the next game.”
Rio Ferdinand singled out Harry Maguire for his assured performance at both ends of the pitch.
“(Harry) showed personality. He made a few mistakes but he came through that,” Ferdinand said.
“That’s why he’s in the team and Gary Cahill isn’t.
“It’s about players who have the ability to bring the ball out, drag players towards them and play behind them.
“He released himself to get into attacking places.”
Gary Neville believes beating Tunisia allows England to be more relaxed going into their second game with Panama.
Neville said on ITV Sport: “With five minutes to go I was worried thinking deja vu, thinking getting on that plane tonight those young players with only two who have started in a World Cup, waking up in the morning to what wouldn’t have been negative media, but an anxiety and nervousness.
“Thinking about the post-match video, thinking about the fact they have to play against Panama in a game they must win. And then the pressure builds.”
Neville admits the England squads in the past where he has been a player and a coach, have not been able to be trusted in major tournaments.
He said: “You cannot trust us. We’ve let ourselves down and I’ve been part of the problem in eight of the last nine tournaments. You cannot trust us to recover from a bad result in the opening game. It’s happened too many times.”
Next up for the #ThreeLions:
🗓 Sunday 24 June
⏰ 1pm BST
🏟Nizhny Novgorod Stadium pic.twitter.com/pOCgIGvT28
— England (@England) June 18, 2018
Harry Kane’s relief was as clear as his joy after securing England a last-gasp victory in their World Cup opener against Tunisia.
Gareth Southgate’s men made an outstanding start to the Group G encounter in Volgograd, where the 24-year-old opened the scoring with his first major tournament goal.
But referee Wilmar Roldan controversially awarded a penalty that Ferjani Sassi converted and the video assistant referee then inexplicably overlooked Tunisia’s manhandling of Kane in the box.
Yet just as it looked set to end as a draw, the England captain nodded home to secure a 2-1 win that he hopes will make the “people in the pubs back home proud”.
“We are proud of each other,” Kane said after the Three Lions started a major tournament with a win for the first time since 2006.
“In a World Cup, you’re never sure how it’s going to go and in recent years the first games have always been difficult.
“It looked like it could be one of them nights again, but we’ve got great togetherness as I’ve said before.
“You’re always proud to see it come off in a game.
“We were talking to each other non-stop, getting each other through it. We never panicked, we never looked like conceding another, which was important, and then got we deserved at the end.”
Kane liked the way England flew out of the blocks at the Volgograd Arena, where they had to rely on character beyond their years.
“It goes to 1-1, momentum changes a bit, so I thought we recovered well from that,” he said.
“It is always in the back of your mind that it is going to be one of them days.
“The ball just wasn’t falling to our player at the right time, but that’s what the character is about.
“That’s why we work so hard to go to 90-plus minutes and thankfully we got one in the end.”
Kane was named man of the match for his display on a night when the lack of VAR was striking, particularly when the Tottenham striker was dragged down at corners by Sassi and Yassine Meriah.
“Maybe a bit disappointed by that,” he said. “Obviously when you look at the penalty they got… I’ve not seen it back, but on the pitch it looked quite soft.
“I guess that’s what VAR is there for, to look at them decisions. If they didn’t think it’s a penalty, we have to deal with that.
“For me, I struggled to get them off me. I tried to run at a few corners and just couldn’t move.
“I guess as players there’s nothing we can do about that. We just have to hope that officials are getting it right more often than not.”
And the officials were not the only irritant in Volgograd, where insects proved a nuisance throughout.
“There was a lot more than I first thought,” Kane added.
“We got told before that there was going to be quite a lot of flies and when we went out for the warm-up it was a lot more than we all kind of thought.
“We had a lot of bug spray on before the game, half-time, which was important because there was some of them in your eyes, some of them in your mouth.
“But I guess that’s part of just dealing whatever comes your way and the team coped with it well.”
Dele Alli is hoping the quad complaint picked up in England’s World Cup win against Tunisia is not too serious.
The 22-year-old played 80 minutes of Monday’s 2-1 Group G clash in Volgograd, despite Fabian Delph being stripped and seemingly ready to come on in the first half.
Alli will have the quad issue assessed upon England’s return to the team base in Repino, with the midfielder hoping it will not rule him out Sunday’s match against Panama.
“Hopefully I am OK,” Alli said after the game. “It’s my quad.”
England manager Gareth Southgate will be hoping for good news after keeping tabs Alli’s issue against Tunisia.
“We had to keep monitoring Dele,” the Three Lions boss said.
“He was feeling a little bit of an issue just before half-time, but he felt he could carry on and I thought the runs that he was making and the way he was pressing the ball was still causing a problem.
“He had a half chance with a lovely ball Jordan Henderson played to him, lofted over the top.
“But we have good options on the bench and we felt to put the freshness of Marcus (Rashford) and Ruben (Loftus-Cheek) would both bring fresh energy but also a different sort threat to the one that we’d posed.”