I saw something similar on my son's U10 team; but, I have never seen that in a professional level match between a pair of tier 1 teams.
In case anyone is interested, I have two very good 4th graders on my team that play rec and club travel soccer. One of them got 3 goals in the first 15 minutes of the game as we jumped out to a 5 to 0 lead. My son got one of the other goals and he plays defense - intercepted a pass, distributed it to the wing and ran with the play as he should, that player then crossed it in front of the net and my son deflected into the net. He missed a very similar opportunity in last week's game and we worked on similar situations in practice. Very happy. Sorry, just being a proud Dad
Anyway, at that point we backed-off a bit. The opposing team then scored two goals just before half; but, on their second goal our keeper whiffed (it happens at any age) and the goal scorer ran up to our keeper and started laughing at him for missing it. My coaching staff was not happy. So to start the second half, we took the breaks off. Within 15 minutes, one 4th grader had 4 goals, the other had 3 and we were up 9 to 2. Had to put the brakes on it then because the coach/team is fined $100 if a team goes up by more than 7 goals. We had our kids shooting over the net on purpose and 'passing' the ball to their keeper on breakaways for the last 15 minutes. Both of our star 4th graders could have had at least 6 goals each if we wanted them to. Message sent.