WATCH: Jamie Carragher v Gary Neville - who's the better assistant referee?
Friday 16 March 2018 17:18, UK
Who is the better assistant referee? Gary Neville or Jamie Carragher?
The pundits were put through their paces by Premier League match officials PGMOL for a special programme - The Referees - Onside with Carragher & Neville - to be shown on Sunday on Sky Sports 1 at 7pm.
Part of their day of training included a role-play situation, where both the former England internationals ran the line and were tested with five different offside scenarios.
The duo also sat down with a number of the Premier League's top officials to give an insight into what it takes to referee in England's top flight, analysing some key decisions from the season so far along the way.
Who fared best? See Jamie Carragher and Gary Neville running the line as an assistant referee by hitting the video at the top of the page.
Watch 'The Referees - Onside with Neville & Carragher' on Sky Sports 1 on Sunday at 7pm after Arsenal v Manchester City on Super Sunday.