Olympic coverage should be added as a Mini-Series, with the title reflecting the on screen name from the provider, each day's coverage can then be contributed as an individual episode and the production/distribution company added to identify the source - for example, see the London 2012 Olympics.
Independent sporting mini-events (such as the World Cup or Six Nations) should be added as a Mini-Series, with the title reflecting that of the on screen name and the production/distribution companies added to the page. However, each episode should relate to a particular game, such as the 2010 FIFA World Cup.
One off events (usually pay per view) such as UFC or boxing matches should be added as a TV Special, reflecting the name the coverage provider has listed and including any production/distribution companies attached. For example, see UFC 222: Cyborg vs. Kunitskaya.