Sunderland boss Paolo di Canio is subjecting his players to intense video analysis this week.
Di Canio, 44, is determined to highlight his players' clangers on film to ensure they do not happen again against Newcastle United.
He said: "We've got to do much better. The lads are ready to work hard and we'll analyse the mistakes.
"That way people can improve and next time they'll consider doing something else."