Legally, you're right, but...

Hi Rich, in our league it works as a choice as for the league there is a min. and for that amount you get a company banner on the outfield fence, plaque with A team picture and a thank you business card size ad. When, a small business sponser a team most of the time it's usually the team of a family memeber etc... that team most of the time end of with jackets,or last names on the back of their spiders, or pizza after the games. etc... etc... you see my point.