Christian Eriksen says victory over direct rivals has lifted the confidence of Manchester United's players.
The Dane has taken stock of the start with the Red Devils and has highlighted two moments this season as the most influential.
He said, "I think the home games against Liverpool and Arsenal helped to really get us going in the season after a few games where we hadn't been that good.
"So I think it must be one of the matches that has been the best moment here at the start."
United are in fifth place in the Premier League with 26 points after 14 games.