Atletico Madrid host Arsenal on Wednesday night at the Metropolitano Stadium in Madrid in the first leg of their UEFA Champions League semi-final, as both sides look to move one step closer to a first-ever European title.The tie brings together two teams who have taken very different paths to this stage. Under Diego Simeone, Atletico have evolved from their traditionally defensive style into a more attacking unit this season. They have already scored 34 goals in the competition — their highest ever in a single campaign — and have been involved in open, high-scoring knockout matches. Their run includes overcoming strong opposition, showing both resilience and attacking intent.A key figure has been Julian Alvarez, whose goals and work rate have been central to Atletico’s progress, while Antoine Griezmann continues to influence play in the final third. Atletico’s home record against English clubs in Europe remains strong, even though their overall recent results against Premier League sides have been inconsistent.Arsenal, led by Mikel Arteta, arrive with one of the best records in the competition this season. They are unbeaten in the Champions League so far and finished top of the league phase. Their strength has been their balance — a disciplined defence combined with controlled attacking play.Defensively, Arsenal have been one of the most solid teams in Europe, conceding very few goals. Going forward, the return of Bukayo Saka gives them an added edge, especially given their improved attacking numbers when he plays.Both teams are still chasing their first Champions League title, which adds extra weight to this tie. With contrasting styles and strong recent form, the first leg is expected to be tight, where small moments could decide the outcome.