100% is way wide of the mark... our CB pairings have been to say the least interesting. At a conservative estimate we've used 9 different players, a couple like Ballard and Curran, not really significant as only getting a matter of a few minutes.
We've used 12 different pairings, of which Baudry Fryers have 8 matches, Conroy Baudry next with 7. Baudry Fryers have some decent results, but so have a lot of the other combos. For instance probably our best result thus far was winning at Home Park.... a Grant Fryers combo.
What makes it so interesting is that conventional wisdom is that in a successful side having a solid stable CB combo is a prime requirement.... and we've not had that.
Because we are borrowing something from the Pep school of thought, whereby his best teams have had players like Mascherano filling one of the centre back slots. Often you heard commentary during that period about how Barcelona would be vulnerable in defence as a result, but the possessioned the life out of teams.
Having two centre backs comfortable on the ball can clearly work - the trick is having that around the rest of the pitch as well. I don;t imagine having some of centre back pairings would be working as well with Dunne and Linganzi in a two man midfield in front of them.
Also worth noting how often Doughty and Grant drop in when we have the ball at the back, with the full backs pushing upfield. Our midfielders being better on the ball, so make room for them and get the full backs in a position to stretch the field and deliver crosses.
We certainly look less of a threat when we have players like Broadbent or Zakuani in the role. Port Vale away (with other mitigating circumstances) being a great case in point. Fortunately on Tuesday, we were still better than the other team in all other 10 positions on the day.