This might be a dumb question but are there weight divisions? I mean I don't really see any divisions in World's Strongest Man. But I know they have them in powerlifting.
Most amat classes have weight divisions: 175, 200, 225, 250, 275, 300, and SHW. The contest I just came from was: 200, 250, 250+. The pros are just an open class. There aren't many in that class that are under 275 anyway.
For women, pro is open and a lot of amat contests are the same way.