Billy Walsh believes we will never see the likes of Katie Taylor again.
The 2012 Olympic gold medallist has dominated the professional ranks since switching from amateur in 2016 and is aiming to take her record to 18-0 against Natasha Jonas this weekend.
USA boxing head coach Walsh, who worked with Taylor for a number of years as as an amateur, says 'we should cherish every moment of this lady' while she is still competing.
He told Off The Ball: "Nobody is born fit, everybody has to work at it. She just has this determination and drive; some boxers have it and others don't have it.
"You're not born with it, it's a drive within you. She has always had this drive within her to be the best she can be, and that just happens to be the best in the world.
"I remember saying this to her when she had won her sixth European and fifth world title, I said 'we're never going to see a person like this again.'

"I'm going to say it again: as a professional, for what she has achieved in her professional career, we are not going to see someone dominate boxing like Katie Taylor, and put women's boxing on the map.
"Without Katie Taylor, women's boxing would be years behind. Katie Taylor put women's boxing on the map. She was the first one the IOC came to watch her fight on the men's world championships before they made a decision to have it in London.
"After they saw her, they said 'the quality and standard is so high, that we have got to have the girls in there.'
"I think we should cherish every moment of this lady, she's in her mid-thirties now, I don't know how much longer she wants to fight or what she wants to achieve. But we have to stand up and take a bow to this lady because she's put Ireland and women's boxing on the map."