Everyone knows that Matt will regenerate into a Capaldi . But what will Capaldi be. Could he go back to the First Doctor… lots of clues given. Tom Baker told Matt in the Day of the Doctor that he would revisit a lot of the old favourite faces!!!! This is the 13th regeneration, so … go back to No.1. The First doctor was not in the line up at the end of the Day of the Doctor… he was in the centre behind the rest. So will Capaldi be dressed like the First doctor with his mannerisms? And Capaldi might have given a few clues when he was announced on TV… some of his mannerisms were def. the First doctor… So does Christmas day return to No.1????