To pair along with yesterday's article, PFF takes a look at the other two gaps associated with the offensive line - the C and D gaps (between the guard and tackle, and outside the tackle). After ranking fourth and first respectively in A and B gap running, Buffalo ranks in fifth in running through the D gap. The were unranked in the C gap category, which means they were neither in the top five nor in the bottom five. Overall, Chan Gailey, Joe D'Alessandris, and the linemen should be quite proud of their performance last year.