Olympiakos 0 Arsenal 3 player ratings: Was hat-trick hero Olivier Giroud the star man?

The Gunners progress to the Champions League Last 16

Olivier Giroud heads in his first of the game (Getty Images)

Olivier Giroud scored a hat trick as Arsenal advanced to the last 16 of the Champions League with a 3-0 win over Olympiakos on Wednesday, overturning an advantage held by the Greeks.

The France striker opened the scoring in the 29th minute, heading home off a cross from Aaron Ramsey, with the ball bouncing under goalkeeper Roberto Gonzalez.

He struck again four minutes after halftime, slotting in a pass from former Olympiakos player Joel Campbell.

BUT WAS GIROUD THE STAR MAN? RATINGS BELOW...

Olivier Giroud heads in his first of the game (Getty Images)

Olympiakos, who beat Arsenal 3-2 in London, nearly pulled a goal back through Kostas Fortounis, while Ideye Brown missed a point blank chance.

But the crowd at Karaiskakis Stadium was silenced when Omar Elabdellaoui slipped and handled the ball.

Giroud again beat Gonzalez from the resulting penalty to seal the Group F match.