Arsenal manager Arsene Wenger has praised striker Olivier Giroud for a 'perfect' performance in the 3-0 win against Olympiacos in the Champions League.

The 29-year-old striker scored the first hat-trick of his Arsenal career to help them progress to the last 16 of the tournament in what was the Frenchman's best display since arriving from Montpellier in 2012.

Following the win, Wenger said: "It was a perfect performance because he scored a header, one with a good combination thanks to a good pass by (Joel) Campbell, and also a penalty on top of that.

"He was sometimes in uncomfortable positions but he fought like mad and he has shown skill and character.

"I always defended Olivier on the character side because he has always had something special on that front. He showed that in the game again today."