Keep Grimaldo Inside, Cover Atlético's Left

The useful detail was Grimaldo's address

Atlético Madrid's opening goal against Osasuna began with Johnny Cardoso lifting the ball toward the right side of the penalty area. The receiver was Alejandro Grimaldo, nominally the left-back. His cutback found Jonathan David; Aitor Fernández saved the first shot, and David converted the rebound. The finish made the score. Grimaldo's address explained the move.

Grimaldo crossed the pitch all evening, appearing as a left-sided runner, a central midfielder and an extra attacker on the right. Osasuna's back five could count Atlético's forwards and still lose the arriving player. Diego Simeone should keep that interior license for Sunday's derby against Real Madrid, with one necessary adjustment: the midfield must cover the left side before Grimaldo leaves it.

The 4-0 score was emphatic, but the derby value sits in that displacement. Atlético moved a defender away from the place Real Madrid will expect to find him and made the rest of the attack harder to label.

Freedom made the attack difficult to label

Koke and Cardoso started the circulation, while Kang-in Lee and Álex Baena changed height and width ahead of them. Baena could act as a false nine or drop into midfield. Kang-in began wide and attacked inside. Grimaldo's movement added one more problem because following him meant opening a lane for someone else, while leaving him free put a polished passer near the box.

The numbers describe sustained control rather than a hot finishing spell: 67.8% possession, 27 shots, 11 on target and 3.99 expected goals, according to AS. Atlético completed 656 passes at 88.4%. Fernández still made enough saves to finish as Osasuna's best player despite conceding four.

Possession percentage alone explains almost nothing. Here it matters because the ball kept reaching different players in the same dangerous interior spaces. Jonathan David opened the scoring and then supplied Kang-in for the second. Robin Le Normand struck the third after a corner, and Baena completed the win from Cardoso's pass. Four scorers emerged from one attack whose positions were deliberately untidy.

Every overload sends an invoice

A roaming full-back is not free; somebody else pays the defensive bill. Osasuna's best early chance came when Raúl Moro carried through the space Atlético failed to close and slipped Raúl García behind Le Normand. Jan Oblak read the pass and smothered the shot. Against Madrid, that warning probably becomes a sprint toward Atlético's goal rather than a footnote to a four-goal win.

The repair does not require chaining Grimaldo to the touchline. It requires a clear exchange before possession changes hands: Cardoso can slide left, the nearest centre-back can defend forward and Kang-in must react to the first lost pass. If all three admire the overload, Madrid will receive the counterattack Grimaldo's movement accidentally created. That is the difference between an interesting wrinkle and a usable derby plan.

Osasuna supplied an easier examination

The strongest objection is substantial. Osasuna changed eight players, left Ante Budimir on the bench and saw a possible equaliser disallowed at 1-0 for a debated foul by Lucas Torró on Le Normand. A rotated opponent chasing stability is not a rehearsal for Real Madrid's speed or individual quality.

That objection should reduce the certainty of the forecast, not erase the mechanism. Atlético still had to unpick two compact lines, and Grimaldo's location repeatedly forced Osasuna to choose between guarding a zone and following a man. Madrid will solve some of those pictures faster. It will also present more space if Atlético can play through the first pressure.

Simeone himself separated the matches, noting that Madrid's attacking strength bears little relation to Osasuna's. Good. Copying Wednesday's game would be naïve. Preserving its most disruptive idea while changing the protection behind it is coaching.

Make Madrid choose the tracker

Atlético enter the derby third on 13 points, two behind Madrid and five behind Barcelona after six matches. A cautious draw would preserve proximity. A passive plan would surrender the best evidence from consecutive league wins in which Simeone's side scored seven without conceding.

Grimaldo's inside movement asks Madrid a specific question: who tracks the extra midfielder when Baena and Kang-in are already changing lanes? If a winger follows him, Atlético can release the outside run. If a central midfielder steps out, David can pin the centre-backs and a creator can receive behind the pressure.

Grimaldo should not become the attack. His position should be the trigger that tells everyone else where the next space has opened. Handing him the entire left flank and hoping the derby becomes another crossing exercise would be simpler. It would also make Madrid's evening simpler.

The first turnover is the audit

Sunday's first ten minutes will reveal whether Atlético trust the idea. If Grimaldo appears beside Koke or Cardoso and the opposite attackers adjust around him, Madrid must defend a shape it did not receive on the team sheet. If Atlético lose the ball and Cardoso has already covered the left channel, the experiment has its insurance.

A stronger opponent may close the move before Grimaldo reaches the box. That still creates information because the tracker following him has left somewhere else. Atlético must find that space quickly, not send Grimaldo wandering for decorative effect. Formation numerology can remain on the broadcast graphic where it belongs.

Osasuna showed why the move works and where it can break. Keep Grimaldo inside against Madrid, protect the first counter behind him and judge the choice at the first turnover: did Atlético create uncertainty, or merely donate the transition?