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Real Madrid's 2-1 win over Barcelona on Wednesday night was decided in the third quarter of the match, when Ancelotti moved Bellingham from the inside-left channel into a false-nine role behind Vinicius and Rodrygo. The change broke Barcelona's high line and gave Madrid the platform to control the second half.
The starting shape
Ancelotti started with a 4-4-2 diamond, with Bellingham at the tip of the diamond, Vinicius and Rodrygo either side, and Valverde at the base. Barcelona matched up with a 4-3-3, with Pedri pressing Bellingham and the centre-backs stepping up to engage the Madrid forwards.
The first 25 minutes belonged to Barcelona. Pedri's movement off the ball and Gavi's press resistance gave Barca the control they wanted, and the away side took the lead on 18 minutes through a Pedri finish from the edge of the box.
The half-time change
Ancelotti changed shape at the break. Bellingham moved from the tip of the diamond into a false-nine role behind Vinicius and Rodrygo. Valverde pushed into the right half-space, Modric moved into the centre, and Tchouameni dropped into the back four. The change was designed to overload the centre of the pitch and pull the Barcelona centre-backs out of position.
How the second half tilted
Bellingham equalised in the 51st minute with a header from a Valverde cross. The goal was a direct result of the shape change - Valverde was now in the right half-space because Bellingham was occupying the centre-backs, and the cross came from a wider area than it would have done in the first half.
The decisive moment came on 67 minutes, when Bellingham won the ball in his own half, drove past two Barcelona midfielders, and played a one-two with Vinicius before finishing past Ter Stegen. The goal came from a Madrid counter-attack that would not have been possible in the first half, because Bellingham was too deep to lead the press.
The shape change gave us control of the centre of the pitch. We knew Barcelona would struggle to press without a reference point.
- Carlo Ancelotti, Real Madrid head coach
What it means for the run-in
The result keeps Madrid two points clear of Barcelona at the top of La Liga, with seven matches remaining. It also gives Ancelotti a tactical option for the run-in - the false-nine system can be used against the sides who play a high line (Barcelona, Atletico, Villarreal), and the original diamond can be used against the sides who sit deeper (Girona, Real Sociedad, Athletic).
THE NUMBERS
Madrid had 58% of possession in the second half, up from 47% in the first. Bellingham had 32 touches in the final third in the second half, up from 19 in the first. Vinicius completed 4 of 5 dribbles in the second half, up from 2 of 6 in the first.
Editor's verdict
The shape change was decisive. Ancelotti's half-time adjustment gave Madrid the platform to control the second half and the win keeps the title race in Madrid's hands. The tactical flexibility on display is also a warning to Barcelona - Ancelotti has more than one way to set up against them, and the next meeting (the Copa del Rey final in May) will be a different game.