Two-time olympic boxing champion Nicola Adams has retired.
Adams revealed the news in an open letter in the Yorkshire Evening Post.
The 37-year-old, who became the first-ever women's Olympic boxing champion at London 2012 when she took the flyweight crown, said she was abandoning her hopes of winning a third gold next year in Tokyo.
I've made the very hard decision to step down from the ring.
Adams last stepped inside a ring in September in London, where a draw with Maria Salinas saw her defend her world title.
"I'm immensely honoured to hold represented our nation - to prefer double Olympic gold medals and then the WBO championship belt is a dream strategy honest", she wrote. But not without affecting my body, and apart from the pains and expected discomfort.
Adams made history at the London Olympics seven years ago, becoming the first woman to win Olympic gold in boxing.
In Rio four years later, Adams became the first British boxer to successfully defend an Olympic title in 92 years.
However, an eye injury has forced her to quit her professional career after just six fights, though she steps away from the ring still a champion - after recently retaining her WBO flyweight world title.
She also claimed World, European, and Commonwealth Games titles.
She won the vacant WBO belt against Isabel Milan in 2018, less than 18 months after her first professional bout, and bows out with an unbeaten professional record of five wins and one draw.