Nigeria technical adviser Gernot Rohr has called on his team to stay grounded despite their winning start in their World Cup qualifiers.
Goals from Alex Iwobi and Kelechi Iheanacho saw the Super Eagles defeat Zambia 2-1 to sit atop Group B that also parades Cameroon and Algeria.
A win against the Greens in Uyo will put the three-time African kings in good position to reach Russia 2018.
However, while acknowledging Nigeria 's confidence, the German added that there is still plenty of work to do before facing the north African giants.
“I believe all the games in this group will be difficult to win because all the four teams are very strong,” he told Caf website.
“Algeria which is the number one team in Africa must be disappointed for dropping points at home against Cameroon.
“They will come to Uyo very well prepared against us. So mathematically, it was a good operation for us that we won in Ndola; and we are the only teams that have three points after the first round of matches.”
“The preparation has been to look at our players in their clubs because we cannot play any friendly match,” he continued.
“We have to analyse the matches and we also have to keep eyes on our players because we have started building a new team with many young players.
“It was good we have two wins after two matches (Tanzania and Zambia) which is good for our confidence but there is still a lot of work to do.”