Who is doing the searches? Is it the police or is it a private security firm? That seems to be an important detail. I guess the Tampa Sports Authority is a government agency? I wouldn't see a problem with searches if the group doing the searches were a private security force working for the owners of the venue/team/whatever.
This is not Naziville USA.
They check bags, fine, but don't hang this judge for erring on the side of civil liberties.