Real Betis Balompié defender Marc Bartra has detailed the rehearsed tactic that thwarted Kylian Mbappé in the 1-0 win over Real Madrid at La Cartuja. His key intervention on a penalty saved by goalkeeper Álvaro Vallés was the result of careful preparation and prior consultation on the rules.

The Verdiblancos, now third in La Liga with 9 points from four matches, secured a significant victory that improves their goal difference, currently standing at five scored and five conceded. Manuel Pellegrini's side now turns its attention to the next fixture away at Villarreal on September 14th.

The decisive action came when Mbappé, the Real Madrid forward, saw his penalty saved by keeper Álvaro Vallés. Marc Bartra, who had positioned his feet right on the edge of the penalty area, used that centimetre of a head start to sprint in and clear the rebound before any Madrid player could react. The Betis defender admitted the move was premeditated. "I tried to calculate as best I could today." Bartra said.

His inspiration came from observing a similar technique used by Valencia's José Gayà. After seeing it, Bartra consulted a friend who is a former Segunda B referee to check the maneuver's legality. The former official confirmed that standing on the very edge of the box is allowed, as long as the line is not stepped on. This validation gave him the confidence to execute the plan under extreme pressure.

The victory over the reigning champion provides a morale boost for a squad aiming to cement a place in the upper reaches of the table. However, the team enjoys this positive moment while dealing with several significant absences. Currently sidelined are Abdessamad Ezzalzouli, Aitor Ruibal, Diego Conde, Diego Llorente and Giovani Lo Celso.

The win leaves Real Betis with a record of three wins and one loss, showing recent form of WLWW. This solid start to the season is a good foundation for ambitious targets. The defensive resilience shown against Madrid, with Vallés as the last line, will be key to maintaining that consistency.

For Real Madrid, managed by José Mourinho, the defeat is a setback in their La Liga title pursuit. The team must regroup in the coming fixtures to avoid losing ground in what promises to be a tight competition. Conversely, Real Betis Balompié proves with performances like this that they can be a difficult opponent for any contender.

The credit for the win is collective, but Bartra's individual detail, born from study and boldness, made the difference. His reading of the rules and its practical application on the pitch turned a dangerous situation into the definitive moment of the match. The defender has added a memorable tactical anecdote to the history of Spanish classics.

Real Betis travels to the Cerámica to face 16th-placed Villarreal on September 14th.