What a difference a season makes...

This time last season Jurgen Klopp's Borussia Dortmund were stuck in a relegation scrap.

This campaign, they have won all 11 games since new coach Thomas Tuchel was appointed - a club record winning run.

A win at home to Mainz tonight could lift them back above Bayern Munich to top spot.

Defending champions Paris St-Germain stretched their unbeaten run at the top of Ligue 1 to four points with a 3-0 win over Guingamp on Tuesday.

It looks ominous for their rivals as Zlatan Ibrahimovic finally bagged his first for the season and former Manchester United man Angel Di Maria netted his maiden goal in France.

But Rennes and St Etienne can both trim PSG's lead back to a point as they visit Gazelec Ajaccio and Troyes - most games are already underway..

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Inter Milan haven't won Serie A since 2010 but, whisper it quietly, could this be their year?

Roberto Mancini's men have a 100% league record and are eight points ahead of defending champions Juventus after four matches.

Inter are at Verona tonight, with the Old Lady entertaining Frosinone.

Image source, .

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An hour after Barcelona kick off, Real Madrid will be underway in Bilbao and it could prove a landmark moment.

Portugal's Cristiano Ronaldo needs a treble to overtake Raul's Real Madrid goal scoring record of 323 goals

In the last three matches he has scored eight goals - including a five-goal haul - and you really wouldn't rule anything out...

He has already hit 37 hat-tricks in his career...  

Spanish La Liga

Ronaldo and Messi aren't used to not being the centre of attention when it comes to goal records in Europe's top leagues.

Tonight Messi's Barcelona travel to Celta Vigo looking to make it five wins out of five in La Liga, while Ronaldo's Real bid to retain their unbeaten start at Athletic Bilbao.

The duo couldn't take the limelight away from Lewandowski... could they?

Live coverage of both games - plus all the other happenings in Spain - coming right here.

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Celta Vigo XI: Alvarez, Planas, Cabral, Mallo, Fontàs, Wass, Hernández, Orellana, Fernández, Nolito, Aspas

Barcelona XI: Ter Stegen; Alves, Piqué, Mascherano, Mathieu; Busquets, S. Roberto, Iniesta; Messi, Suarez, Neymar.

Celta Vigo will not be anyone's mugs. 

Os Celticos are just two points behind Barcelona, having won three and drawn of their first four league matches of the campaign.

Barcelona have won four our of four...

Plenty of top European action going on and I want you to be a big part of it.

Get involved via #bbceurofooty,, external post on the BBC Sport Facebook page, external or text 81111.

Let us know your thoughts on any of the action.

Hello and, yes, 24 hours on and Bayern Munich's Robert Lewandowski is still very much the talk of Europe.

The Pole broke all sorts of records as he banged in five goals in nine second half minutes, having come on as a substitute, to help Bayern come from behind to beat Wolfsburg and retain their 100% Bundesliga start. 

It was the fastest five-goal haul in a major European league since Opta started recording stats.

Over to you Cristiano Ronaldo and Lionel Messi...

Image source, Reuters

You can imagine two similar conversations being held in a household in Barcelona and Madrid last night...

"Hey Cristiano/ Leo (delete as applicable), did you see what did Robert Lewandowski last night?"

"What's that? Oh, scoring five goals? So what, we've all done that haven't we?"

"Not in nine minutes you haven't..."

Silence for a couple of minutes......

"Nine minutes you say? Right, who have we got tomorrow?..."