Olympiacos 0-3 Arsenal PLAYER RATINGS: Olivier Giroud steals show but Mesut Ozil and Joel Campbell also shine for Gunners

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Up against it going into their Champions League clash in Olympiacos, Arsenal pulled off a sensational display to secure a place in the last 16 following a comfortable 3-0 win.

Here Sportsmail's Sami Mokbel breaks down the player-by-player ratings following a memorable night for the Gunners in Piraeus. 

Petr Cech had little to do in the Arsenal goal but made an excellent save in the 58th minute

ARSENAL (4-2-3-1)

Petr Cech 7

Had little to do until 58th minute when he produced a superb stop to preserve a vital 2-0 lead. 7

Hector Bellerin 6.5

Overworked and exposed in first half. Dealt with his workload admirably, but needed more help. 6.5

Per Mertesacker 7.5 

His experience and composure was key for Arsenal in a cauldron of noise in Piraeus. 7.5

Laurent Koscielny 7.5

Made some timely interceptions for the Gunners and kept his cool in the heat of battle. 7.5

Nacho Monreal 7 

Arguably Arsenal’s most consistent performer this season. Once again, didn’t let his team down. 7

Aaron Ramsey and Laurent Koscielny (right) applaud Arsenal fans following the 3-0 victory

Theo Walcott was not at his best but still caused Olympiacos problems all evening

Mathieu Flamini 7

Has been thrown in at the deep end due to injuries. A few shaky moments but stood tall. 7

Aaron Ramsey 7.5

Struggled to impose himself in the early stages; but stamped his quality on the game. Booked. 7.5

Theo Walcott 7

Struggled with game's pace in first start in over a month - but still caused the Greeks problems. 7

Mesut Ozil 9 

The Gunners played to the beat of his drum. At the heart of his side’s best moments. 9

Joel Campbell 8.5 

Back at the club he spent 2013-14 on loan. What a return. His best Arsenal performance. 8.5

Mesut Ozil was again a creative influence for Arsenal and was at the heart of their most dangerous attacks

Joel Campbell (right) takes on Pajtim Kasami on his return to the club he spent 2013-14 on loan

Olivier Giroud 9.5 

Criticised for not producing when it matters most. Not any more. Landmark night for striker. Booked

Subs:

Gibbs 6 (for Walcott, 72); Oxlade-Chamberlain (for Campbell 90); Chambers (for Giroud 90)

Subs not used: Ospina, Debuchy, Gabriel, Iwobi

Manager: 

Arsene Wenger 8.5

Proved he’s still one of the very best in the business as he masterminded this heroic effort.

Arsene Wenger celebrates Arsenal's third goal. The Gunners boss got his selection and tactics spot on

Olympiacos (4-2-3-1)

Roberto 4; Elabdellaoui 5, Da Costa 5, Siovas 5, Masuaku 5; Kasami 5 (Dominguez 72, 5), Milivojevic 5; Seba 5 (Hernani 77, 5), Fortounis 6.5, Pardo 5 (Finnbogason 86, 5); Ideye 5.

Subs: Kapino, Botia, Salino, Cambiasso. Booked: Elabdellaoui, Fortounis

Manager: 

Marco Silva - 5

Olivier Giroud dispatches his penalty kick which secured his hat-trick and Arsenal a place in the last 16

Arsenal's 3-0 win means they have qualified for the Champions League last 16 along with Bayern Munich

Man of the Match: Olivier Giroud - Giving it to Ozil, who was poetry in motion, is tempting. But three goals; there’s only ever one winner.

Referee - Nicola Rizzoli (ITA) - Managed to keep a lid on proceedings when they threatened to boil over. 7