Watch: Chamberlain & Santos Goals vs Olympiacos

Arsenal defeated the Greek side Olympiacos in their second Champions League group game thanks to goals from two of Arsene Wenger's summer signings, Alex Oxlade-Chamberlain and Andre Santos.

Arsenal's first win of their Champions League campaign sees them move up to second place in Group F, behind Marseille, who defeated Borussia Dortmund by three goals.