I have added some other things in my reply to your post. Have a look.
For sure, in some cases there is something fishy. There are a lot of possible explanations to why such and such has happened, but only the people who were involved in the programming in this game know what they have put in there. Also, some things might have happened be due to a flaw or a fault. But, after having made a lot of observations, some deductions can be made.
Like I have said, there might be something that already gives hidden significant advantages and disadvantages to teams at the start of the season itself, hence affecting the performance of your team for the season as a whole. Then, there might be something else that gives hidden significant advantages or disadvantages to teams when it comes to individual matches or rounds. Just keep a good 'save' of everything. When similar things will happen to you later on, you just have to compare. You might even see similarities in the match statistics for the anomalous cases. The same applies for injuries and so on. If there are way to similarities and trends, then for sure this has been programmed to occur as such, and also it can't be due randomness only.
I have noticed a lot of fishy things, similarities and trends in this game. But, some people don't seem to agree with me, and they try to justify things based on other things that can't be used to compare with them.
So, I will let you and other users make their own deductions after having gone through such things repeatedly.