Finally enough data is available to make some OK conclusions from disabled list data. The time lost to players on the DL peaked a few years ago, but has been heading down because of possible decreases in PED use and/or the declining ages of players in the league. Some teams are beginning to put forth more of an effort into prevent DL trips. The results right now look mixed. Team will never be able to prevent all injuries, but they can aim to prevent as many as possible.