Mandel Nallo has a new opponent for Bellator 255 . Nallo (7-1 MMA, 2-1 BMMA) will face Brazil’s Ricardo Seixas , who fills a void left by Keoni Diggs on the Bellator 255 preliminary card. The event takes place April 2 at Mohegan Sun Arena in Uncasville, Conn., and airs on Showtime