Arsenal kicked off their UEFA Champions League campaign with a confident 2-0 win over Athletic Club at San Mames. Super-sub Gabriel Martinelli made an instant impact, finding the net just 36 seconds after stepping onto the pitch. He later turned playmaker, setting up Leandro Trossard’s deflected strike in the 87th minute. Tactical brilliance, sharp finishing, and squad depth sealed the Gunners’ statement victory on Spanish soil. Watch all the highlights from UEFA Champions League 2025-26, exclusively on Sony LIV.