It wasn't pretty but it sure was effective, and Arsenal are headed to the UEFA Champions League semifinals for the first time since 2009 after beating Real Madrid 2-1 on Wednesday (5-1 on aggregate).

Arsenal have taken advantage of Champions League reforms this season – but the rules may yet be twisted even further

Real Madrid will once again rely on an attacking strategy without reinforcing the midfield with a fourth player. The starting XI will include Rodrygo Goes despite his recent goal drought, Lucas Vázquez and David Alaba as full-backs, and the return of Fede Valverde to the midfield.