Manager Mikel Arteta highlighted the team's improved squad depth this season, stating it makes them better equipped to progress further in the competition compared to last term.
Arteta rotated six players for the match, noting the positive impact of substitutes, including Saka who scored the decisive second goal in stoppage time.
The Gunners took an early lead through Martinelli, but required a crucial save from David Raya to prevent Olympiacos from equalising before Saka sealed the win.
Arteta expressed satisfaction with the challenging win and described the surreal experience of coaching against Jose Luis Mendilibar, who was his coach at 13.