The Buccaneers (and many other teams around the league) unveiled their initial depth charts this week simply because it is required for their upcoming preseason openers. Tampa Bay will play its first game of the year in Minnesota on Saturday evening. With half of training camp still to go and more than a month remaining before the regular season opener, the Bucs' coaching staff would probably prefer to wait a while longer before putting any position orders on paper.
In other words, the Buccaneers' first depth chart of the year should be taken with a rather large grain of salt.