Jozy Altidore believes Sunderland's second-half performance against Arsenal should be their standard.
Sunderland lost 3-1 on Wearside to the Gunners.
He told the Sunderland Echo: "Arsenal had a lot of chances in the first half, but we put them on edge in the second half. If we had started the game like that, I think we would have got something.
"We need that intensity because that's how we're going to get more chances.
"We're not going to tap the ball around teams like Barcelona.
"We're going to get chances by being aggressive, by being tenacious and we have to keep doing that."
