Seems as JDB eluded to the age is a huge factor, at least for my team. Not sure if it is too high really. As the seasons progress and we acquire draft picks and younger players through FA it seems there won't be as many out and doubtful injuries, probables are okay cause they can play.
my injury list
24 total
5 out all old except 1
1 doubtful old
7 questionable a couple old rest are 6 to 9 yr exp
11 probable a couple old rest are various