Previous WC finish: 2010, Group Stage (0-1-2).
Highest WC finish: 1994 & 1998, Round of 16 (2-0-2).

Population of Nigeria: 174.5 million {2013 estimate}. Capital: Abuja, metro area pop. 3.0 million {2012 est.}. Largest city: Lagos, metro area pop. 12.0 million {2013 est.}.
The map below shows the 8 largest cities in Nigeria (all cities in Nigeria with over 800,000 in their metro areas) {‘List of Nigerian cities by population‘ (en.wikipedia.org)). Also shown on the map below are all the Nigerian States which have players featured on the squad chart.

From The Guradian, from 30 May 2014, by Stuart James, ‘Nigeria’s Peter Odemwingie relishing his ‘fresh start’ in World Cup‘ (theguardian.com).

Nigeria coach, Stephen Keshi. Stephen Keshi.
Nigeria squad captain, Vincent Enyeama (GK, Lille). Vincent Enyeama.

Below: Theoretical Best XI for Nigeria (with 4 other player-options further below) -

Photo and Image credits above -
Nigeria jersey, photo from footyheadlines.com.
Nigeria, map of country on globe, by TUBS at ‘File:Nigeria on the globe (Africa centered).svg‘ (commons.wikimedia.org).
Nigeria blank map by Uwe Dedering at ‘File:Nigeria location map.svg‘ (de.wikipedia.org).
Coach,
Stephen Keshi, photo from en.africatopsports.com.
Goalkeeper,
Vincent Enyeama (Lille), photo from nigeriashowbiz.com.
Defenders,
Efe Ambrose CB/RB/DM (Celtic), photo by SNS via bbc.com/football.
Kenneth Omeruo CB/RB (Chelsea/Middlesbrough), photo by Ian Cooper via gazettelive.co.uk/sport/football.
Godfrey Oboabona CB/RB (Çaykur Rizespor), photo from haberciniz.biz.
Elderson LB (AS Monaco), photo by AFP/Getty Images via uefa.com.
Midfielders/Attacking MF,
Ogenyi Onazi CMF/DM (Lazio), photo from worldfootball.net/player.
Victor Moses AMF/W (Liverpool), photo by Getty Images via goal.com.
John Obi Mikel CMF/DM (Chelsea), photo by Warren Fish at en.wikipedia.org.
Forwards/Wingers,
Brown Ideye W/FW (Dynamo Kyiv), photo from dailymail.co.uk.
Emmanuel Emenike FW/W (Fenerbahçe), photo from nigerianeye.com
Ahmed Musa RW/LW/FW (CSKA Moscow), photo by Epsilon/Getty Images Europe via zimbio.com.
Other player-options,
Peter Odemwingie FW (Stoke City), photo from stokesentinel.co.uk.
Victor Obinna FW (Chievo Verona), photo by Marco Luzzani/Getty Images via gettyimages.in.
Nosa Igiebor CMF (Real Betis), photo from yonuncatehefallado.com/blogs.
Azubuike Egwuekwe CB/LB (Warri Wolves), photo from naijaligue.blogspot.com.
___

Thanks to the contributors at ‘2014 FIFA World Cup qualification‘ (en.wikipedia.org).
Thanks to the contributors at ‘Nigeria national football team‘ (en.wikipedia.org).
Thanks to http://www.transfermarkt.com/en/, for player-position details.
—

http://smallbusiness.chron.com/stop-script-errors-firefox-48954.html