Adjust if they must...but why would you take a player out of his preferred position if you don't have to? Injuries in the middle of a game should really be the only exception. Suli doesn't strike me as the type of player who can adapt to such a change without a fair bit of time. Also, re his stint at the tigers, he was playing as a winger. Why would Walker have to move to the left when Suli was brought in? Both being right centres, obviously Walker was more able to adapt (and that says a lot, as Walker was pretty crappy on the left)