Arsenal won 4-0 against Coventry City last night and advanced to the 5th round.
Lukas Podolski scored 2, one of which was assisted by Mesut Ozil.
Giroud scored in the 84th minute with a shot from a little distance and a little angle, and Santi Cazorla scored a goal similar to Giroud's.
Coventry City in the second half were not slackers, they chased the ball and hit the post, but Arsenal were still above standard.
What pleased Arsenal fans last night was the introduction of a very exciting young lad who plays in midfield, Gedion Zelalem.
This lad is 16 years old and is in Germany's youth team and also comes from Ethiopia.