Katie Taylor put on a practically "punch-perfect" performance in defending her undisputed lightweight title against Spanish challenger Miriam Gutierrez.
Giving his reaction, her brother Peter Taylor told the Herald that: "It was the kind of display that was welcome on the back of two very, very hard-fought gruelling matches with [Delfine] Persoon."
The Bray boxer was able to show off her skill-set during the fight which went all the way to the final bell, and which she dominated from the very beginning.
He said that her family are immensely proud of Katie, and never take any result for granted.
"The whole family have been around boxing long enough to know not to take anything for granted.
"Katie herself, in fairness, she never gets in there complacent. She takes every fight very, very seriously." Mr Taylor pointed out that boxing is "so, so unpredictable".
"We have this classic adage in boxing that 'styles make fights' and you can just have certain individuals' styles that can cause the very best of boxers a lot of problems. So you just never know what is going to happen in there on any given night."
The fight took place in Wembley on Saturday night, and Katie fiew out to her training base in Connecticut yesterday morning on an early flight.
"I watched it at home with my wife. We weren't quite expecting it to be that one-sided to be honest with you," he said, referring to Gutierrez's who brought a very good undefeated record into the ring. "In fairness to her, she was in great condition which meant she was able to absorb a lot of punishment, recover well in the minute break and come back for the next round.
"I think it was a testimony to her conditioning and her toughness."
Meanwhile, the family are hoping that they will be able to congratulate Katie in person over the festive season.
"She will hopefully make it back home for Christmas, depending on restrictions and quarantine and all that, but that is the plan at least."
Among those who sent their congratulations was Sports Minister Catherine Martin who said: "Yet another absolute masterclass by the incredible Katie Taylor! Comhghairdeas."