#2 Chelsea weren't clinical enough in front of goal
When one looks at the scoreline, it feels like the home side dominated proceedings, but it didn't pan out like that, especially in the first half as Chelsea created a lot of openings but weren't clinical.
Tammy Abraham had a great chance very early on in the game as he struck the post, while Barkley's effort was saved by De Gea. Also, Emerson hit the post during the dying minutes of the first half.
In the second half too, the Londoners worked the ball really well and they were creating chances but as soon as that second goal went in, Chelsea got pegged back. Only if the away side had taken their chances in the first half, the result could have been completely different.
#1 Marcus Rashford and Anthony Martial shine for United
Before the start of the game, most of the build-up was about United not replacing Romelu Lukaku and the lack of proven goalscorers at the club. Rashford and Martial over the last couple of seasons have been inconsistent in front of goal, so the questions asked were right. But against Chelsea, they proved their qualities.
Both of them got on the scoresheet and Rashford could've scored a hat-trick. The first goal on the day for United and Rashford was a penalty which the Englishman himself won and scored.
Martial scored United's second as he tucked in a brilliant cross from Andreas Pereira. United's third and Rashford's second was a brilliant goal as Pogba picked out the 21-year-old with a delicious ball, which the Englishman brought down nicely before slotting it into the net. There is a lot of pressure on Martial and Rashford this season and it is fair to say that they have started exceedingly well.