Rockhold , 15 - 3 , recorded a second - round submission victory over the Brit at UFC Fight Night 55 .
Rockhold , 15 - 3 , appeared to land an intentional headbutt in the opening exchanges of the fight .
Rockhold , 15 - 3 , recorded a second - round submission victory over the Brit at UFC Fight Night 55 but appeared to land an intentional headbutt in the opening exchanges of the fight .