Former UFC middleweight champion, Israel Adesanya suffered his second career knockout loss on Saturday night, falling to Nassourdine Imavov via second-round TKO in the main event of UFC Fight Night 250 in Saudi Arabia. The Nigerian-Kiwi fighter, who entered the bout on a two-fight losing streak following defeats to Sean Strickland and Dricus Du Plessis, started well with a series …