Following the unfortunate injury to Tony Romo there is a natural tendency to wonder which players on the roster are most irreplaceable to the success of the 2016 Cowboys. When considering this, one can become conflicted when considering the trade-off between which players are the most irreplaceable and which players are purely the best and most talented. For example, Zack Martin is perhaps the top guard in the entire league and likely one of the top fix or six players on the roster based on talent alone. But how irreplaceable is he compared to a player like Byron Jones when you consider the fact that Ronald Leary could start and play well for probably about 75% of the league while our backup safeties may not even make some NFL rosters?