It was as tight and fiercely-contested as we have come to expect from games against Chelsea - and the tie is goalless heading into the second leg.
Arsene Wenger was pleased with the way his side battled at Stamford Bridge and this is what he said in his post-match press conference:
on the performance…
I felt it was a game that was very intense physically, that was locked as well because the two teams were well organised and defended well. You could see it was the first leg of a decisive tie and overall I must say we had a great solidarity, spirit in the side and overall it was a deserved 0-0.