Former Ultimate Fighter winner Roy Nelson has never backed down from a challenge – or stopped short of issuing them himself.

Nelson, who put his contender spot on the line earlier this year and was defeated by Stipe Miocic, let it be known recently that he is willing to take on anybody.

“Wanna fight? Big Nog (Antonio Rodrigo Nogueira) – Legend Like It,” Nelson posted on Facebook. “Shane Carwin – It’s about time 3rd time is the charm.

“Brock (Lesnar) – Always wanted to do WWE.”

Nelson (19-9) was scheduled to face Carwin before the former interim UFC heavyweight champion retired after suffering yet another injury. The 37-year-old “Big Country” was topped by Daniel Cormier this past October.