Manchester United manager Erik ten Hag believes Cristiano Ronaldo's introduction against Arsenal helped his team turn the contest in their favour.
The Portuguese attacker was brought on in the second-half with United ahead 1-0.
The Gunners soon equalised at Old Trafford, but United scored two more goals through Marcus Rashford.
Asked what the thinking was behind moving Rashford, Ten Hag said: "It can also do it from the right, you bring in Cristiano Ronaldo as a frontman.
"Marcus did as a nine and from the wing, he played like Christian Eriksen, a pressing game, he transferred really good, but we expect from him a way of playing as a striker to be the target, drop in, play over, linking, arriving in the box and scoring goals.
"I'm really happy with his performance, it shows his development and room for improvement, but he's got such great capabilities, I'm happy with him in the team."