BILBAO, Spain -- Mikel Arteta lauded Arsenal's squad strength and said the team's "finishers can be more important than the starters" after goals from substitutes Gabriel Martinelli and Leandro Trossard sealed a 2-0 Champions League win against Athletic Club in Bilbao.

Martinelli took just 36 seconds to score Arsenal's opening goal on 71 minutes after replacing Eberechi Eze and his goal was created by Trossard, who had taken the place of Viktor Gyökeres six minutes earlier.

Martinelli and Trossard then linked up for the Belgium winger to score Arsenal's second goal on 87 minutes and after seeing his late changes make a decisive impact, Arteta said his substitutes proved their ability as game-changers.

- Super subs give Arsenal perfect UCL start in Bilbao

- Live updates

See Full Page