Team Logo. The Rio Grande Valley Vipers are a team in the NBA Development League. They won the championship in their third season. They are the local affiliate of the NBA's Houston Rockets. Retrieved from "https://prosportsteams.fandom.com/wiki/Rio_Grande_Valley_Vipers?oldid=5961" Categories: NBA Development League teams Teams in Texas Add category Cancel Save Community content is available under CC-BY-SA unless otherwise noted.