Olympiakos triumphed at the Emirates Stadium in a glorious Champions League night after beating Arsenal by 3-2.
The Greek giants managed to deny Arsenal tactically as they took the lead two times in the first half thanks to Felipe Pardo and Kostas Fortounis goals on the 33rd and 40th minutes respectively. Theo Walcott had esqualised on 35th minute giving Arsenal the hopes for a turnaround.
The Gunners piled the pressure on after the interval and Sanchez brought the game back on level terms with a header on the 65th minute. But straight after Finnbogason gave Olympiakos the lead again from close range and lead the Greek champions to celebrate a tremendous victory at the Emirates.