Chances are you can't name a single player on the Iran squad. You just might, though, be able to name their coach. Carlos Queiroz is probably their most recognisable name, having managed Portugal at the last World Cup. And that means a regimented, defensive approach for Group F's minnows, who will set up to frustrate all three of their opponents and would see a single point in Brazil as a success.
Nigeria under Stephen Keshi has been built into a cohesive, attractive side, arguably the best in the Confederation of African Football. Or at least they were last year at the Africa Cup of Nations, where an impressive side led by midfielder John Obi Mikel and striker Emmanuel Emenike took home the title. If they can rediscover that form, they will be favourites to advance behind Argentina out of the group. The problem, though, is that the Nigeria of recent months has looked a far less convincing proposition, leading to fears it could be another World Cup group stage exit for the Super Eagles.
If you haven't already, join the community on the Liverpool Offside, where we'll have coverage and lively in-game discussion for every match at World Cup 2014.