I dont think he is anywhere near as bad as some people make out.
If he was some french or spanish defender who we knew nothing about he would be judged on his performances for us alone and he wouldnt get half the stick, as he is Tyrone Mears the decision was already made.
Anything good he has done (including a couple of assists) is classed as lucky, yet anything bad and its he is rubbish! He is a backup right back, coming in to play out of position in a high energy role of right wing back in one of the worst defences we have had in modern times, our defence could make Dani Alves look poor.
Last night he did ok, setup a couple of chances too, personally as we switched to a 4, i would of put him in at right back (his natural position) moved Brunt to left back (which has become his position over the last few years until six months ago) and took off any one of Tosin, Dawson or Bartley, and you could take your pick because they were all shocking, we would of had a settled defence with players playing in their normal roles.