Before I go, I'll point you in the direction of our live Premier League coverage. Ian Woodcock and Jonathan Jurejko are in the chair (well, two chairs, if we're being pedantic) to guide you through the English top flight's four 15:00 BST kick-offs - including Pep Guardiola's Manchester City versus Bournemouth. Thanks for your company.
"With these three players up front, it's almost always going to be a goal," says Rafinha, reflecting on today's win for Barcelona. Yep, I think I'd find space for Messi, Suarez and Neymar in my five-a-side team too, mate.
I know most of you following this text commentary will be doing so for Messi, Suarez and Neymar, and that's totally understandable. For most neutrals, though, the highlight of the afternoon at Estadio Municipal de Butarque was Gabriel's consolation, greeted by the home fans - and the club's Twitter account - as if it were a La Liga-winning goal. I've never seen 'Golazo' spelt with 28 O's before.
For now, Barcelona are back on top of La Liga, on goal difference ahead of Real Madrid - who face Espanyol tomorrow. On the subject of which...
At times, it had the feel of an FA Cup third-round tie; the Spanish equivalent of Doncaster Rovers v Liverpool, perhaps. There was plenty of spirit from the home side; it just wasn't enough.
A great effort from Leganes, who mixed a fair degree of physical effort with the odd flash of attacking promise. They were well beaten in the end, but no team will enjoy playing against them on this evidence.
Gabriel, hunting for his second Leganes goal, wriggles past Gerard Pique's challenge, but his shot flies wide of the near post.
Not quite. Messi clears the wall, and it veers just wide of the goalkeeper's left-hand post.
Lionel Messi is dragged down 25 yards from goal, just right of centre. This is set up for his hat-trick goal, right?
There's been an edge to this game all the way through, and it flares up again. Omar Ramos, heartly sick of Neymar's stepovers, gives the forward an almighty boot, and gets a yellow card. There has been some high-quality play today, but there has also been the odd bit of clogging worthy of a Sunday league pub game. It's actually been great fun to watch. Should I say that?
Crikey, what would the noise be like if Leganes got a second? Mamadou Kone, running at goal, is denied the chance to find out as Samuel Umtiti slides across just as the forward is getting ready to shoot.
Honestly, they could probably have heard the roar of the Leganes crowd back in Barcelona. Unai Bustinza can probably claim an assist for the goal, having leaned forcibly into the Barcelona wall to create the space for Gabriel's shot to get through.
It's a belter too. Gabriel bends the free-kick over the wall and into the top corner.
And what a noise! Leganes' first home goal in La Liga is met with a mighty roar. Several fans take off their tops and start whirling them round their heads. It's an 'I was there' moment. And Leganes deserve it.
Gabriel is wrestled down by Arda Turan just outside the Barcelona penalty area. The referee awards Leganes a scrum... sorry, a free-kick. Chance here...
Paco Alcacer has made a slowish start to his Barcelona career; he was far from impressive against Alaves last weekend, and he is denied a chance for his first goal for the club as Jordi Alba brusts down the left and squares the ball towards him. In fairness, it's a terrific last-ditch sliding challenge by Unai Bustinza to nudge the ball away.
The home fans go absolutely ballistic as Gerard Pique scythes down Gabriel with a hopelessly mistimed challenge. Pique gets a lecture from referee Ricardo de Burgos, who has had his work cut out today, and has done a pretty good job.
Brilliant from Neymar, who races clear on the break, and cannot be stopped even by Unai Bustinza's attempt at a rugby tackle. Pablo Insua does halt his progress inside the penalty area with what looks like a bodycheck. No need to argue for penalties when you're 5-0 up, though.
Alexander Szymanowski, the Argentine on as a second-half substitute for Leganes, has a chance to score that consolation goal. But the winger, who was their top scorer last season as they won promotion, snatches as the shot and it flies high into the stand.
The Leganes fans are still singing at the tops of their voices. Their team have been well beaten today, but they would love a goal of their own to celebrate.
Rafinha recovers quickly after getting a bang on the head as he goes up for an aerial challenge with Ruben Perez who, remarkably, has not been booked yet. Nothing wrong with Perez's challenge; it's just that he always gets booked at some point in a game.