Derrick Lewis knocks out Tallison Teixeira and then savagely taunts his corner following first-round win in Nashville.

Jon Jones is retired; Tom Aspinall is here to stay. Let's talk UFC heavyweights ahead of Saturday's Lewis vs. Teixeira main ...

Undisputed UFC heavyweight champion Tom Aspinall could face Alex Pereira one day, but believes the former 205-pound champ has some work to do.