That "50 check point" theory could be correct. I was saving reds for the end of the season in case i'm still in all three competitions, that day when I collected 50 something injuries started, every match 1 or 2, every! Now Im down to ~10 reds and no more injuries last 2 days.....

I have another theory, it's maybe programed that injuries are highly increased during season days lets say 16 and 20....