The Premier League premiership was dropped for Manchester United and Chelsea when they met at Old Trafford.
With just over the quarter played, Marcus Rashford gave the home team the lead on the penalty which he himself arranged.
The guests had to prick both ribs and bars before the half time was over, and then the blue lungs were punctured after a break.
In match minute 65, Anthony Martial faced a 2-0 lead and two minutes later Rashford went deep and bumped 3-0.
21-year-old runner Daniel James set the final score 4-0. In his debut, he managed Paul Pogba's pass and shouted his joy.
United thus gets a flying start to the season. Victor Nilsson Lindelöf played the entire match next to record acquisition Harry Maguire.