Have a look at premiertwits dot com
I'm looking to create a clone of this site but with added functionality and more leagues. This site is done using wordpress and a plugin called tweet blender
The back-end must be flexible where I can add/modify/delete clubs (as clubs gets promoted and relegated), add their logos, add hashtags, etc. Coupled with advertisement slots and enhanced with other social media widgets.
In each team page it will have the team's latest tweets and also RSS feeds of selected blogs inserted.
Open PMB if you're up for this project, send me links of your previous twitter related or WP related projects.
Be reminded you're creating a new site from scratch.