Sunderland boss Paolo di Canio wants his players to get nasty after their 1-0 home defeat to Fulham.
Di Canio was clearly frustrated by his side's inability to make the most of their chances with new boys Cabral and Ondrej Celustka among those who came close in a dominant opening period.
Di Canio said: "We weren't really ferocious. We have to be nasty in terms of our football.
"I don't want to say we had a clear identity but a big part of the puzzle is clear. I think we did well but it's obvious we can do much better."
