Gerard is onto a loose ball inside the box after Pepe blocks a shot but the Villarreal striker's shot from close range is into the sidenetting.

Rodrigo tries his luck again from distance as the Portugal defence backs off. It is well struck but no trouble for Rui Patricio.

Quite nice to hear organic reactions to what happens on the pitch after months of mainly hearing the artificial crowd sounds being pumped in.

Admittedly there hasn't been much yet for the home fans to get excited about as Cristiano Ronaldo is flagged offside following a rare Portugal attack.

Dani Olmo warms the gloves of Rui Patricio as Spain continue to up the shots count.

Leeds striker Rodrigo fizzes a strong effort just wide of the post as Spain attack again.

The visitors are in full control of this one. Cristiano Ronaldo has pretty much had as many touches of the ball as some of those fans in the stands.

First touch for Kepa in the Spain goal as he plays a straightforward pass to Sergi Roberto. He hasn't had anything of note to do but a clean sheet would be a big confidence booster for the Chelsea keeper.

Now Sergio Canales races away down the left and whips a fierce cross in. Raphael Guerreiro gets a great block in and the ball balloons up into the air before Dani Olmo volleys well wide.

Excellent start by Spain. I don't think Portugal have had a touch of the ball yet!

Lovely disguised pass by Dani Ceballos slips in Dani Olmo and the young forward is in behind the Portugal defence but the angle is tight and he fires across the face of goal. All Spain in these opening exchanges.

Lively start by Spain as they attack straight from the off. Gerard Moreno is onto a low cross from the left but Rui Patricio is alert to close down the striker and block his shot before Sergio Busquets launches the loose ball high over the goal and out of the ground.

We're up and running in Lisbon.

Tonight's game acts as a warm up for Portugal and Spain ahead of their Nations League fixtures.

Portugal are top of Group 3 - ahead of France on goal difference - and the two sides meet in Paris on Sunday before Portugal then play Sweden in Lisbon next week.

Spain, meanwhile, are top of Group 4 and host Switzerland in Madrid on Saturday before travelling to Ukraine in Kiev next week.

Image source, Getty Images

Spain coach Luis Enrique has urged goalkeeper Kepa Arrizabalaga to rise to the challenge of losing the number one spot at Chelsea and prove his talent with the national team.

Kepa has recently been dropped by Blues coach Frank Lampard for new new signing Edouard Mendy.

"Kepa is not in a nice situation, but it is not the end of the world," Enrique said.

"It's the ideal moment for him to rise again, for us to see what Kepa is made of. What he is going through at Chelsea now is something that happens to all players throughout their careers."

Image source, Getty Images

Another reason to keep an eye on Ukraine's friendly with France tonight is because the former have included 45-year-old assistant coach Oleksandr Shovkovskiy in their squad after three goalkeepers tested positive for Covid-19.

Georgiy Bushchan is Ukraine's only available keeper so ex-Dynamo Kiev keeper Shovkovskiy, who retired in 2016, is on the bench.

He is part of Ukraine manager Andriy Shevchenko's coaching set-up.

There's a whole host of international friendlies tonight as teams prepare for the Nations League.

Portugal against Spain is the pick of the bunch and that's coming at 19:45 BST, but we'll be keeping tabs on the action from the other games as well.

Here are some of the other decent-looking fixtures tonight:

Italy v Moldova

Germany v Turkey

Netherlands v Mexico

Switzerland v Croatia

France v Ukraine

The Estadio Jose Alvalade in Lisbon is the venue for tonight's game.

A limited number of fans have been allowed in to watch, with 5% of the 50,000 capacity stadium to be filled.

Image source, Getty Images

Image source, Getty Images

The teams are in and Cristiano Ronaldo starts for Portugal. Big evening for Kepa as the Chelsea keeper starts for Spain.

Portugal XI: Patricio; Cancelo, Pepe, Semedo, Guerreiro; Neves, Moutinho, Renato Sanches; Trincao, Andre Silva, Ronaldo.

Spain XI: Kepa; Roberto, Llorente, Eric García, Reguilon; Busquets, Canales, Dani Ceballos; Gerard Moreno, Olmo, Rodrigo.

The last time Spain and Portugal met, this man stole the show.

Image source, Getty Images

That was at the 2018 World Cup, when Cristiano Ronaldo bagged a hat-trick in a thrilling 3-3 draw.

It may only be a friendly tonight, but encounters between these two sides are rarely ever dull.