The Corner-Pull Penalty

Camp Nou, 3 April 2012, the quarterfinal second leg after a 0–0 first leg at San Siro. Messi had scored an 11th-minute penalty for Antonini's foul, and Nocerino's away goal had levelled it at 1–1. In the 40th minute, as Xavi prepared a corner, Björn Kuipers booked Alessandro Nesta. When the corner came in, Nesta had both arms around Sergio Busquets and hauled him to the ground; Kuipers pointed to the spot. Messi scored in the 41st minute. Iniesta made it 3–1 in the 53rd.

Clarence Seedorf asked the referee why. The answer, relayed by Seedorf afterwards, was that Kuipers had already warned Nesta about pulling in the box. Nesta acknowledged the tug. Zlatan Ibrahimović said he was 'just disgusted' and that 'the ball wasn't in play and he called it'.

Three arguments, in ascending order of strength. First, consistency: holding at corners happens on nearly every set piece in every match, and a referee who penalises this one and not the dozen others has not applied a law, he has chosen a moment — and the moment chosen was 1–1 in a Champions League quarterfinal with the away side level. Second, the same corner: Goal's frame-by-frame analysis found Carles Puyol with both hands around Nesta at the moment of the pull, which makes the penalty a decision to punish one of two identical offences.

Third, and the point Ibrahimović made on the night: timing. The holding, on Goal's reading of the frames, began before Xavi struck the corner, and under the written law a penalty can only be awarded for an offence committed while the ball is in play. If the pull that mattered began with the ball dead, the correct response was a caution and a warning, not a penalty. Kuipers' post-match remark that 'the match went as we expected it to go' did nothing to reassure anyone in red and black.

Nesta was warned, then booked, then did it again with both arms. That is the sequence the referees' guidelines of the time describe: intervene early, caution, and penalise once the ball is in play. Kuipers followed it to the letter, and the pull that brought Busquets to the ground plainly continued after the corner was taken, which is the moment the law cares about. Nesta himself did not dispute the tug.

Consistency cuts both ways. The complaint that 'this is never given' is a complaint that referees usually fail to apply the law, not that this referee misapplied it. And Milan's own grievance list included the first penalty, which Allegri conceded was Milan's mistake. Barcelona were the better side over 180 minutes, scored from open play through Iniesta, and then went out of the competition in the next round after Messi missed a penalty against Chelsea. A protected club has a better spring than that.

Law 12 in 2011/12 listed holding as a direct free-kick offence and a penalty when committed inside the area, 'provided the ball is in play'. The referees' guidelines on holding at set pieces asked officials to act early: warn players who hold before the ball is in play, caution those who persist, and award the penalty when holding continues once the ball is live. The written law therefore supports both the prosecution's timing argument and the defence's sequence argument. There was no video review; the additional assistant referee behind the goal was in use in the Champions League that season.

Messi converted for 2–1, Iniesta scored eight minutes into the second half, and Barcelona won 3–1 to reach a fifth straight semifinal. Allegri said the referee 'helped on the second'; Guardiola said 'you can talk all you want about referees'. Two Milan away goals at 1–2 would have sent Milan through on away goals, which is the win condition of the tribunal's replay: it picks up after the second penalty, as Milan, with Iniesta scripted for the 53rd.