this could be one hypothesis, but in the scrimmage the aggressivity don't should be almost near to the zero? In this case players should play like for fun (I think). Last season I haven't had many injuries like now, I can't understand... If it's not a bug I hope that will stop soon because at this time I can't make a good season not for my errors of tactic / managing but only because the computer is making me out of play.
Just to info, one of injured player is a reserve, this mean that the player plays mostly in garbage time
I wish it were that way (and that aggressiveness also reduced in garbage time) but my player picked up two of his injuries specifically because he was playing in scrimmages to try to get his minutes for GS (once during allstar week, and once after he returned from that injury). I think there's definitely a case to be made for changing how injuries are caused - they shouldn't be exclusively on fouls - but that's probably better in the Suggestions forum.