Brazil need a quick improvement if they're to retain the Copa America admits Lucas Levia. Brazil needed a late equaliser to avoid defeat to Paraguay yesterday. This 2-2 draw, coupled with a goalless draw with Venezuela in their opening game, means the holders could be knocked out if they don't win their final group game against Ecuador on Thursday. If Brazil are to remain in the competition they will need to up their game admits Lucas. "We shall have to improve otherwise things are going to be very difficult. We recognise that," said the Liverpool midfielder. "We did all we could to win and then we made two mistakes which led to Paraguay's goals."