On February 11, 2021, Richardson signed with the Caudillos de Chihuahua of the Mexican Fútbol Americano de México (FAM) league. The Mexican media referred to the move as the biggest signing in Mexican pro football history. When asked of his role on the team, Richardson said "My role will be — we’ll have to let y’all know” and speculated that his role could vary from "making decisions" to "might being part of (the) D". He saw limited playing time in his first game, the 2022 season opener, conceding snaps to LaVance Taylor in the 28–9 loss to the Parrilleros de Monterrey.
