I think that there is something to be said for giving Rudd a few games. For all the reasons given by Personaltrainer, or others, Ruddy does not seem quite the keeper he was. We said that last season as well.
Goalkeepers mature slowly, and reach their peak much later than outfield players, but it is difficult to see any great improvement in John Ruddy's play. Rather, he seems to have gone a little backwards. The decline/stagnation seemed to date from the terrible injury he had a season or two ago. He clearly had to feel his way back.
It is difficult to pinpoint specific failings, but there are some goals scored against or minor errors, and I am left wondering, "Would the Ruddy of old have done better there?" Sometimes, perhaps occasionally, the answer is that old Ruddy would have done better.
I think that Rudd is a better all round keeper than Bunn, despite the latter's shot-stopping ability. If Rudd is to develop further, however, he needs a few games. Now could be the time, when the defence is wobbling regularly, to give Rudd a few games.