Arsenal opened their 2025/26 UEFA Champions League campaign with a 2-0 win over Athletic Club at San Mamés on Tuesday night.
The Premier League side struggled to break down a well-organised Spanish defence in the first half, with chances at a premium.
Despite dominating possession, Mikel Arteta’s men lacked the incisiveness to turn control into goals.
Substitutes change the game
It was Arteta’s changes from the bench that proved decisive in the second half. Belgian forward Leandro Trossard and Brazilian winger Gabriel Martinelli combined to devastating effect, delivering the breakthrough in the 72nd minute.
Trossard released Martinelli with a perfectly timed pass, and the Brazilian showed composure to control with his head before racing through and drilling low past goalkeeper Unai Simón.
The pair linked up again minutes later to secure the result. This time Martinelli turned provider, cutting back smartly for Trossard, who calmly slotted home for his first goal of the season.
Depth proves decisive
The two goals highlighted Arsenal’s strength in depth, as Arteta’s tactical substitutions swung the game in their favour after a cagey opening hour.
The Gunners had circulated the ball patiently without reward, but the introduction of direct, pace-driven play ultimately broke Athletic’s resistance.
Appreciation for travelling fans
At the final whistle, Arsenal players made their way towards the travelling supporters high in the stands to applaud their backing.
The victory sets Arsenal off to a strong start in Group Stage action.