Ireland's Katie Taylor beat Amanda Serrano for the third time in their epic trilogy, winning their bout at New York's Madison Square Garden on a majority decision after a chess match of a fight.
Two of the cards read 97-93 in favour of undisputed light-welterweight champion Taylor, with the third card unable to split them at 95-95.
The fight played out in front of a sold-out arena for the latest instalment of women's boxing's great rivalry and, though not quite the all-out war of their previous meetings, it remained just as gripping.
"We have made history three times," said Taylor, on a night when the iconic MSG hosted an all-female card for the first time.
"It is such a historic fight and a pleasure to share the ring with her. We are history makers forever."
Unlike the scoring debate from their second fight in November, it was difficult to disagree with this verdict as Taylor was much more economical on the night.
Puerto Rico's Serrano enjoyed some success in rounds six and eight, but the challenger was unable to sustain the pressure with some vintage moments from 39-year-old Taylor helping her turn the tide and produce a strong finish to put a seal on victory.
"I want to thank Amanda Serrano, what an amazing fighter," said Taylor.
