The names that were in the list supplied by the Oregonian (I believe) were some of the lamest suggestions ever. They were obviously done by someone who either A: thinks they're funny (and they're not) or B: not actually from here and just went with stupid stereotypes to be funny.
Mavericks doesn't make any sense anymore. Especially since pro sports teams tend to not share names anymore. Outside of Rangers, Giants, Cardinals, Panthers, Kings and Jets, there aren't duplicate names in pro sports.
And in the case of the Giants and Cardinals, they were in the same cities at one time. And of the list, only 2 of them are relatively recent teams/expansions.