An injury to left-back Callum Doyle forced a tactical rethink by Norwich boss Johannes Hoff Thorup, which paid off with a dramatic 1-0 win over West Brom.
Doyle missed the game with a calf problem and the Dane opted for a back five instead of a four, with Kellen Fisher deputising down the left.
"Knowing that we will be without a left-back for probably the rest of the season was one of the reasons behind the different approach because last time we played against West Brom, (Tom) Fellows on the right side created problems for us," Thorup told BBC Radio Norfolk.