Nigeria played a 2-2 draw against Scotland last week and traveled here for this final World Cup friendly.
"We were not able to keep our ball possession like we did for the last 12 to 15 minutes," Nigeria coach Stephen Keshi said. "We'll see how it goes in the next game."
The next friendly for Nigeria will come against the United States on Saturday in Jacksonville, Florida.
"It's going to be a really good test," Nigeria captain Joseph Yobo said. "It will be an exciting game and hopefully, we can raise our performance."
Greece will be in Group C at the World Cup along with Colombia, Ivory Coast and Japan.
Nigeria will be headed to Group F with Iran, Argentina and Bosnia-Herzegovina.