"Pre-West Ham, we could have gone third and we let ourselves down," Lampard told Sky Sports.
"Today, there was a bit of pressure to get back to fourth and we produced - so get used to that pressure, whatever way it looks, because it's going to be tough all the way through."
"To concede in the first half was painful because we showed the qualities that were missing last week," Pearson told Sky Sports.
"We are having to play our way back into nick. Time is not on our side but we have to be brave enough and want the ball. The second half performance was one we can build on.