Seth Johnson, Dominic Matteo, Alan Smith and Zoumana Camara have three cautions each and are just two away from suspension.
Jody Morris, Jermaine Pennant, David Batty, Salomon Olembe, Lamine Sakho and Didier Domi have collected two bookings each.
Jason Wilcox, Paul Robinson, Michael Bridges, Lucas Radebe, Gary Kelly and Roque Junior are on one caution.