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www.sapaintball.info
There is not a lot of tourney ball as compared to here. SA has in the past had around 5 "national" comps and a host of smaller more local tourneys. The bigger tourneys get around 20 teams.
This year there seem to be more comps in that there are 2 series being run, the "Coastal" and "Highveld" series. This should result in about 8 or 9 national comps with up to 30 teams in each.
There is also a national 3-man series.
The Jo'burg scene is by far bigger, as around 80% of team originate from or close to JHB. Cape Town is much smaller.
The site above will give you details of the next tourneys.