Let's not be silly. Do you honestly think Gary Locke and Darren Jackson are standing on the sidelines week after week thinking, "Callachan is having a nightmare again, better keep him on and play him next week as well"? To be continually picked at Championship level you need to be fulfilling the designated role within the team given to you by your manager. Neither of us know what that specific role is, but he clearly does enough in the eyes of the current management team, and the four before them, to nail down a starting place in our team.