Chimaev signs with RAF league, immediately receives callout from Bo Nickal

Khamzat Chimaev has signed a contract with the RAF league, adding to his existing UFC commitments. Immediately following the announcement, Bo Nickal responded by issuing a challenge to the champion. The post also notes that Arman Tsarukyan defeated Urijah Faber 13-1 in grappling and subsequently called out Colby Covington, promising a 10-0 domination. The brief mention provides limited details about the RAF signing beyond the basic announcement.