Here's something interestesting. There's a choice - but not for sports.
Originally Posted by Tdol
It is the policy of BBC Radio News that collective nouns should be plural, as in The Government have decided. Other departments, such as BBC Online, have resolved that collective nouns should always be singular, as in The Government has decided. BBC Television News has no policy and uses whichever sounds best in context. The difficulty for writers comes because there is no rule - collective nouns can be either singular or plural.
The advice from Radio News is fine, but think about what you are saying. A lot depends on whether the organisation is seen as a singular entity or as a collection of individuals.
It is more natural to write The committee park their cars in the field rather than The committe parks its cars because the committe is being thought of as separate people. It would also be correct to write The committee has decided to ban cars from the field because it is being seen as a single body.
In sports, teams are always plural.