I learned from G'Day! Teach Yourself Australian in Twenty Easy Lessons that the correct verb in Australian (dialect) for to cheer for or to support your favourite sports team is to barrack.
The author took particular pains to say that there is no such verb as to root for a given team in (for example) Aussie Rules. To root isn't used with any object in Australian, direct or indirect: You root, full stop. Better not to say any more about to root here because this is a family forum.
One question, though, about to barrack: do you barrack a team without any intervening preposition (i.e. does to barrack, like to support in British usage, take a direct object) or can you barrack for a team (in other words, does to barrack take an indirect object)?
Or do you barrack, period; in other words, would to barrack take neither a direct object nor an indirect object?