LAS VEGAS – Tafon Nchukwi may only be four fights into his MMA career, but he already has the UFC president raving about him. Nchukwi (4-0) earned a UFC contract Tuesday at Dana White’s Contender Series 32, thanks to a huge head-kick knockout of Al  Matavao in the night’s featured bout. A proven finisher, Nchukwi is honored to have gotten Dana White’s attention, who compared the newly signed light heavyweight to Mike Tyson. “Hearing him say that, that’s really high praise,” Nchukwi told reporters, including MMA Junkie, after his win at the UFC Apex