News Publishing for Sports site

We need a news publishing system for our sports site. The site has differnet sections and system should be capable of publishing post only to one sections or multiple sections if selected. Full permission based for writers. No public comments. Admin area should be able to control the whole system. All standard features of a news publishing system. It should have a WYSIWYG editor integrated. It should be flexible to fit in the design on the site easily. Should be simple to use. Headlines needs to be linked to the whole story. each story has its own page generated on the site. and users should be able to navigate from one news to another. There needs to be news archived system. Admin should be able to define how many days, and how many news needs to be listed on main pages of each section.