Arsenal have held Premier League Champions Chelsea to a goalless draw in the first leg of their English League Cup semi-final match played on Wednesday.
The match played at the Stamford Bridge saw the Gunners holding their London rivals at their backyard to give them a slight advantage going into the second leg.
That second leg will be played on Wednesday, January 24 at the Emirates.
The winner will meet Manchester City or Bristol City in the final to be played at Wembley.
Man City came from a goal down to beat the Championship side by 2-1 at the Etihad on Tuesday night.