You'd have to be very careful with any kind of "SportsWiki" minus a lot of rules. Wikipedia is already plagued with many sport-related stubs and half done articles because the only person working on them ran out of time or went on to the next project.
That's the big issue we just don't have enough people working on sport articles given how massive it is. Take the Olympics for example, in a perfect world, all of the nation, sports and supporting pages would be created and completed at a high quality during the span of the Olympics. That's over 700 articles, not including the over 10,000 athlete pages which would be updated. It's no wonder people set up articles in advance.