Hypia wasn't great against Chelsea but he was suffering from a stomach bug... It shows how much we need another CB if we are prepared to play a player who is ill rather than bring someone else i to cover.
Hypia for me has been one of our best players this season, and I agree with Stu that his bad games always seem to come when he is playing next to Traore as he ends up covering 2 positions his own and left back because Traore is simply not good enough