Third umpire in the spotlight on Day Two

Jonathan Trott's lbw dismissal just before tea left England a precarious 11 for two.

Erasmus had already made a marginal decision that Ashton Agar was not stumped off Graeme Swann, video-replay footage unable to convince none of the number 11 debutant's back foot was grounded behind the line when Matt Prior lifted the bails.u00a0

Marais Erasmus