Under way in the, OK, a Madrid derby.

Shinji Kagawa has just given Borussia Dortmund the lead in their game at Stuttgart. If they win (or draw) today, then Bayern will have to wait for the Bundesliga title.

What happened in the reverse fixture this year? One of the busiest shifts of my life, that's what happened.

Read the match report for one of the most ridiculous games ever here.

Image source, #bbceurofooty

Real are without Cristiano Ronaldo (thigh) for this Madrid derby but Gareth Bale (back) returns from injury.

Bebe starts for Rayo Vallecano, as does Aston Villa loaneeJose Angel Crespo.

Rayo Vallecano: Juan Carlos, Tito, Quini, Amaya, Crespo, Trashorras, Jozabed, Pablo Hernandez, Embarba, Bebe, Miku.    

Real Madrid: Navas, Varane, Pepe, Danilo, Marcelo, Kroos, Bale, Kovacic, Isco, Jese, Benzema.  

Not too much action in the German capital so far. Douglas Costa had a go from outside the box but Hertha's keeper was able to deal with it.

Borussia Dortmund are still drawing 0-0 in Stuttgart, which would mean Bayern couldn't win the title today anyway.

Who's going to win the La Liga title? Will Barcelona pick off the four wins they need to clinch the crown? Or will they open the door for one of the Madrid sides to win an unlikely title?

Let us know your thoughts on Twitter, using #bbceurofooty.

So what's coming up for you in this live text page today? Well I'm basically glued to this desk for the next seven or eight hours to bring you the action from...

Rayo Vallecano v Real Madrid (15:00 BST)

(with updates from Hertha Berlin v Bayern Munich, 14:30 BST)

Atletico Madrid v Malaga (17:15 BST)

Barcelona v Sporting Gijon (19:30 BST)

French League Cup final: PSG v Lille (20:00 BST)

This game is already under way, but here's some line-ups.

Hertha Berlin: Kraft, Pekarik, Langkamp, Stark, Mittelstadt, Cigerci, Lustenberg, Plattenhardt, Stocker, Weiser, Ibisevic.

Bayern Munich: Neuer, Kimmich, Tasci, Benatia, Rafinha, Vidal, Costa, Thiago, Muller, Gotze, Lewandowski.

Image source, EPA

Bayern Munich can win their fourth consecutive Bundesliga title today.

If they beat Hertha Berlin AND Borussia Dortmund lose at Stuttgart (which is also under way), then the title race is over.

It would mean coach Pep Guardiola, who leaves for Manchester City this summer, would have won the German league in each of his three season in charge.

However, he says he expects Dortmund to win to keep their slim hopes alive.

"Dortmund will win in Stuttgart so we still have to win two games," the Catalan said.

Image source, AP

While Barcelona were slipping, Atletico Madrid and Real Madrid have been like two steamrollers, squashing everything in sight.

Real Madrid have won eight La Liga games in a row, while Atletico have won eight out of the last night.

Oh, and they've both reached the Champions League semi-finals.

So how does the La Liga title race stand?

Barcelona lead the table on head-to-head record from Atletico Madrid. (Goal difference is not the deciding factor in Spain)

Real Madrid are one point further behind. There are four games to go.

I did some number crunching yesterday and Barca will win the league on head-to-head if they finish joint on points with Atletico, Real or both. If Atletico and Real are joint top, Atletico will be champions.

None of the teams have games you'd expect them to lose left.

Barca's opponents are all bottom half - maybe the home derby with Espanyol on the penultimate day might be their toughest test.

Atletico's biggest test may be at home to sixth-placed Celta Vigo on the final day.

Real Madrid have three away games in their final four - but ninth-placed Valencia at the Bernabeu could be their biggest worry.

Coming into the start of April, Barcelona were nine points clear at the top of La Liga and unbeaten in 39 games. 

But a defeat by Real Madrid in El Clasico sparked a phenomenal collapse.

They lost their next two La Liga games, and got dumped out of the Champions League by Atletico Madrid.

However an 8-0 win over Deportivo on Wednesday will have stopped the rot. Or so they hope anyway.

Image source, Getty Images

Spanish La Liga

Right, you're among friends here.

No judging. 

So you can just tell us the truth.

That's fine.

I mean we were all thinking it.

Come on, be honest now.

That's right.

Last month, you thought Barcelona had already wrapped up La Liga, didn't you? 

So did I. 

But nobody - not even Diego Simeone or Zinedine Zidane - could have dreamed of that collapse.

And here we are - four games to go and we have possibly the best major title race in the world on our hands.