There is no intentional reason for this (players' injury probability is completely independent of all other players) but it is very likely that a position group may all together get to a point that they are more likely to get injured together. I would start by looking at fatigue settings for that position, i.e. if all players are equally fatigued because they all have similar conditioning, they all will also have similar higher probabilities for injury.

Are there plans to make individual positions (or even individual players) independent for fatigue settings, for instance you may have player A (eg an SLB) carrying a knock that you want to set at 25 but you want to be able to play his back up and the MLB and WLB at 55.

Therefore, if you have a player that is prone to injuries you can rotate him in/out more often than the rest of his positional team mates. It would be akin to easing a player back into the team and also means you wouldn't have to have backups rolling on/off unnecessarily.

It may not be intentional, but it seems to be pervasive across leagues and positions without regard for 100 conditioning or the 50-55 fatigue setting I typically use.

The Phantoms won the season opener 83-0. I was happy until I looked at the depth chart to see who was injured. It was my whole starting offensive line ;)

I had a question. Can we only put one player on injured reserve?

For clarity, what was your fatigue setting for OL, and were they fully conditioned going into the season opener?

Conditioning was great..........Misc set at around 45-50. I wanted to put another player on injured reserve, but I cannot. I am thinking we only get to do that with one player right?

IR is unlimited, but you can't bring anyone back from IR. If you're one week into the season, they will almost certainly recover (or reach "probable" status) by the end of the season, especially if you make the playoffs.

your not kindling you have only 6 healthy OL guys

Phantoms = https://theefl.myfootballnow.com/team/12

I also thought you could only put a player on IR if their health score is "0".

Yes, the IR tab won't appear unless the player is designated with an 'out' status.