With the second legs of the UEFA Champions League quarter-finals set to unfold this week, the Opta Supercomputer has projected the four teams most likely to advance to the semi-finals—based on current form, first-leg results, and statistical modelling.

Strong advantage for first-leg winners

According to the predictions, teams that secured victories in the first leg hold a commanding edge, with none of the trailing sides given more than a 21.1% chance of staging a comeback.

Among the frontrunners, Arsenal are in the strongest position, with an 88% probability of reaching the semi-finals after their away win over Sporting. Close behind are Paris Saint-Germain at 85.6%, Bayern Munich at 83.4%, and Atletico Madrid at 78.9%.

Recap of first-leg results

The opening legs delivered several high-profile results across Europe:

  • Arsenal edged Sporting CP 1-0 away from home
  • Bayern Munich defeated Real Madrid 2-1 at the Santiago Bernabéu
  • Paris Saint-Germain secured a 2-0 victory over Liverpool
  • Atletico Madrid stunned Barcelona with a 2-0 win at the Nou Camp

These results have heavily influenced the Supercomputer’s projections, placing the winning sides firmly in control ahead of the decisive return fixtures.

Uphill task for trailing teams

Clubs such as Real Madrid, Liverpool, Barcelona, and Sporting now face an uphill battle to overturn their deficits. While comebacks are a hallmark of the Champions League, Opta’s data suggests the odds are firmly stacked against them this time around.

As anticipation builds for the second-leg clashes, all eyes will be on whether statistics hold true—or if Europe’s elite competitions deliver yet another round of dramatic turnarounds.