Katie Taylor had to dig deep in New York's iconic Madison Square Gardens in front of a sea of Irish fans.
The defending lightweight champion somehow overcame a determined and raging Amanda Serrano to earn a split decision victory in a showdown described as one of the best boxing spectacles of all time.
The 7-Division Brooklyn-based Puerto Rican almost finished Taylor in round three with her relentless power punches, but Taylor hung in and deserved the narrow victory.
Press coverage was unprecedented for the historic event with Taylor and Serrano both prepared to live up to the moment. What transpired live on DAZN and in front of a sold-out 20,000 seat Madison Square Gardens was one of boxing's best ever events.