the 2014 Commonwealth Games in Glasgow, Marshall beat Ariane Fortin of Canada to take the gold medal in the women's middleweight division. In May 2016, Marshall qualified for the 2016 Rio Olympics, after reaching the semi-finals of the 2016 AIBA Women's World Boxing Championships in Kazakhstan. Professional career Marshall has stated she went through “a dark time in 2016” when she lost after a controversial decision at the Rio Olympics. But Floyd Mayweather had spotted her obvious talent and was quick to sign her as a professional. On 18 May 2017, during a press conference to promote the IBF junior-lightweight title defence of Mayweather promoted Gervonta Davis against former British champion Liam Walsh, Floyd Mayweather Jr. announced to the press that he had signed Marshall to a professional promotional contract. Marshall made her professional boxing debut at super-middleweight on the undercard of The Money Fight, in the professional boxing super-fight between undefeated five-division champion Floyd Mayweather Jr. and the former UFC Lightweight Champion and Featherweight Champion Conor McGregor. It took place at the T-Mobile Arena in Paradise, Nevada on 26 August 2017. She defeated Sydney LeBlanc by unanimous decision 40–36 in a four-round bout. Marshall lifted the vacant WBA super-middleweight Inter-continental title in Sofia, Bulgaria, after winning all 10 rounds to claim a comfortable points victory over Yanina Orozco (Argentina). A couple of weeks after her pro debut in Las Vegas, Marshall decided to split from Mayweather Promotions, however said she had left on good terms. On her return to the UK Marshall linked up with Hennessey Sport and went back to training with Peter Fury, uncle of Tyson Fury, who had previously trained her leading up to her first professional fight in Las Vegas. On 31 October 2020 in her 9th professional fight Marshall became the WBO female middleweight champion with a TKO victory over opponent Hannah Rankin at Wembley Arena. "There were times when I thought, 'When will my chance come?' But tonight it did and I grabbed it with both hands", she told Sky Sports. Marshall was initially scheduled to face Claressa Shields in a title unification bout on September 10, 2022. However, due to the death of Queen Elizabeth II the bout was postponed to take place on October 15, 2022. Marshall lost the fight via unanimous decision with two judges scoring the fight 97–93 and one scoring it 96–94, all in favour of Shields to