Charlton Athletic are facing an uphill battle to win their first game since August as they trail 1-0 to West London rivals Brentford at the break in their Championship tie.
The hosts could have gone ahead after four minutes when the ball fell kindly for Franck Moussa, but the midfielder dragged his effort well wide.
Johann Berg Gudmundsson then found himself one on one with David Button, but could only fire at the goalkeeper.
Stephen Henderson, who is making his first appearance of the season, was forced into a save midway through the first half as he palmed away Alan Judge's fierce strike.
However, Judge turned provider in the 26th minute as John Swift headed home from the winger's cross to put the visitors 1-0 ahead.
Alan McCormack almost doubled Brentford's lead on the stroke of half time but his fierce shot cannoned back off the underside of the bar.