Valencia winger Guedes proved the match winner as his shot had too much power for Jasper Cillessen in the Netherlands goal.
Here are the talking points from Porto.
PORTUGAL THE EUROPEAN TOURNAMENT TEAM
Portugal in the 21st century are quite the European tournament team.
They are the current European kings and added the Nations League jewel to their crown having been third twice and runners-up once in five editions of the Euros since 2000.
While their players might be pretty, their football isn’t, but it is certainly effective.
Guedes was this tournament’s Eder, scoring the sole final goal in a similar sort of fashion to his compatriot, with a powerful shot which really should have been stopped.
But while this current side possesses much more quality than the Euro 2016 winners, their style hasn’t evolved much.
They remain a peek-a-boo team, happy to sit in and contain pressure before exploding on the counter.
Whenever the Dutch backed off to give them time on the ball, they lacked ideas, but out of possession and then on the break, the Portuguese were so dangerous.
Fernando Santos is constantly chastised in Portugal, and rightly so because with this talented crop they could be so much more.
But then Portugal have won the last two major European trophies, and as France proved at the World Cup, it’s substance over style when it comes to winning titles in the international arena.
Tired minds, tired bodies. It’s easy to offer up the obvious excuse of 120 minutes against England having played a day later than Portugal, too, but it’s legitimate and its consequence was there to see on Sunday.
The Dutch are hallmarked by speed, both of thought and feet, but an energy-siphoning season for their star players and the exhausting semi-final encounter meant the electric flow was switched off.
To Portugal’s credit, they were set up to frustrate with their signature block-and-counter style. Yet the fact the Dutch failed to register a single shot until the 65th minute is evidence of their fatigue.
Creation from midfield was lacking, there was no incision from the forward line – Ryan Babel and Memphis Depay were both woeful – and the only route into the Portugal half was for a long time from the long diagonal passes of Virgil van Dijk.
There was barely any movement off the ball and when on it, the passing was prosaic. But it is a lifeless performance in isolation, a team grayed out, one matching their changed strip and feeling blue as opposed to their usual Oranje zest. It makes sense to attribute that to the work load.
BB GUN ATTACK
There’s an enticing proclivity to focus on the youthful exuberance of the flying Dutch, yet Portugal have their own thrilling offspring who must not be ignored.
Indeed, Bruno Fernandes (22) and Bernardo Silva (24) have shown throughout this tournament that they will be a special pair for Portugal in the coming years.
On Sunday, the twin buzzing red bees searched for weak points in the Dutch defence and were a constant hive of activity in the final third.
It’s easy to see why Pep Guardiola is reportedly keen to add Sporting midfielder Fernandes to Manchester City.
He and Silva were incredibly difficult to play against, blending their positions on the right side or moving across the pitch to pick up the ball and create space.
In the first half alone, Fernandes had five shots at goal and while no goal was profited, the conviction in each strike was impressive.
There was clever innovation elsewhere as well, a sharp chop back followed by a delicious outside-of-the-boot pass to a galloping Nelson Semedo created an opening, and the same connection a danger when Fernandes intelligently turned the ball around the corner when facing his goal.
Silva was all action, too, fast to press and slippery in the box, it was his cut back to Guedes which opened the scoring.
They made the Dutch look slow, and that’s a huge testament to their quality.
The director of the new Diego Maradona documentary admits he was driven to discover why the Argentinian is still “creating chaos” in his late 50s.
Asif Kapadia views the Maradona project almost as the final instalment of a “trilogy” on flawed genius – with Formula One driver Ayrton Senna and singer Amy Winehouse the subjects of parts one and two.
The difference with Maradona, as Kapadia saw it, was the chance to explore what becomes of such a uniquely talented individual when their life is not cut short.
“It became an idea of, what happens if you get old and you’ve got this amazing gift?” he told the Press Association.
“Also, I suppose there was a question of, why is he doing the things that he’s doing? Why is he still creating chaos?
“I really enjoyed watching Amy and Senna on a big screen with an audience, quite collective emotions and experiences.
“I thought, ‘I’d love to see this in Argentina with a crowd, or Naples with a crowd, or even in England’. So partly it was that, in doing it as a movie about another big name who gets old, who we try to understand, because he’s not necessarily very loveable and likeable when you think about him.
“And I didn’t know what the story was going to be, I didn’t know whether or not I’d like him, even. It’s actually happened along the way.”
The documentary, which is released on June 14, focuses primarily on Maradona’s time at Napoli, where he led the hitherto down-at-heel Italian club to two national league titles in 1987 and 1990.
It was a time when the 1986 World Cup winner’s cocaine addiction escalated, and when he began to associate with members of the region’s notorious organised crime underworld.
Few players have polarised opinion like Maradona, who is a hero or a cheat depending on who you ask, but Kapadia says for him and his generation there is no-one who comes close, however unlikely a sporting superstar he may be to look at.
“He won the World Cup and everyone says it’s the greatest single player’s achievement in one tournament, no-one has ever done anything ever since like that,” Kapadia added.
“It’s a team game, it’s not really meant to be about individuals. But he made the team better.
“And then he goes to this team in Italy that’s never won anything, ever, never won anything since, and won, in the toughest league in the world, there’s probably never been a league as difficult as that ever, before or since, and he won, twice.
“So then when you weigh that up and you look at the type of football and the way he was treated and his body shape, I mean he doesn’t even really look an athlete. I look at him and go, how can he be?
“He just doesn’t look like someone who should be able to run or do anything. But he was amazing.”
Maradona was one of the first players who made enough money from the game and his various endorsements to never need to work again, with top stars now earning around £500,000 a week.
Kapadia insists the fragile nature of a footballer’s career means they have every right to earn as much money from their ‘art’ as they can, while they can.
He added: “I have no problem with them earning as much as they can, I think they deserve it. They’re the artists at the heart of it, (and) their career could end tomorrow.”
Fernando Santos’ first XI in the semi-final against Switzerland, including hat-trick hero Cristiano Ronaldo, went onto the pitch for the first time since Wednesday’s 3-1 victory at Estadio do Dragao.
Potugal are the only side unbeaten in the competition, after finishing on top of group A3, with two wins and two draws against Italy and Poland, and beating Switzerland to reach the final.
Ronaldo’s side will face in the Netherlands on Sunday in Porto and the Juventus superstar’s international team-mate Ruben Dias says the 34-year-old will need help from the rest of the squad to secure success.
“Of course, he needs a team to support him and we are united on this task,” Dias said.
Hear more from the centre-back in the clip above