Usman responded to Buckley's challenge with irony

Kamaru Usman, former UFC welterweight champion, has answered Joaquin Buckley's challenge.

"Take a number and get in line. What's he ranked, tenth or eleventh? I don't even know how many guys have already challenged me. Like Daniel Cormier said, it's the most reasonable challenge for them. Buckley had a good momentum going, but he was losing the fight until he found a way to end it early."