LAS VEGAS – Without expecting it, Kennedy Nzechukwu found himself headlining a UFC event. The light heavyweight ended up serving as the main event of Saturday’s UFC Fight Night 215 after Derrick Lewis, who was scheduled to fight Serghei Spivac, withdrew from the card hours earlier due to medical issues . That meant that Nzechukwu (11-3 MMA, 5-3 UFC) was now going to fight Ion Cutelaba (16-9-1 MMA, 5-8-1 UFC) at the top of the card