What happened: Johnny Walker dismissed the possibility of ever fighting his brother, Valter Walker, inside the Octagon. Asked whether he would accept a matchup against his sibling, Walker shut down the prospect, stating he is not crazy enough to share a cage with family.

Why it matters: Speculation arose after Walker moved to heavyweight, placing both siblings in the same weight class on the promotion's roster. Sibling matchups have remained taboo across major combat sports, ensuring the two will chart separate paths toward contention.

What to watch: Walker next headlines UFC Vegas 124 against Waldo Cortes-Acosta.