Ex-Miami Dolphins coach Brian Flores is suing his former employers, as well as two other teams and the NFL itself, which he claims is "racially segregated" and "managed much like a plantation".
Flores led the Dolphins to back-to-back winning seasons for the first time in almost two decades, but was still sacked last month.
His dismissal leaves only one black coach currently working in the league, with Mike Tomlin in charge of the Pittsburgh Steelers.
