Team Logo. The Rio Grande Valley Dorados were a team in Arena Football 2. They were very successful in their existence. They folded along with the league in 2009. Retrieved from "https://prosportsteams.fandom.com/wiki/Rio_Grande_Valley_Dorados?oldid=6113" Categories: Arena Football 2 teams Teams in Texas Add category Cancel Save Community content is available under CC-BY-SA unless otherwise noted.