Savannah Marshall won on her professional boxing debut on the undercard of Floyd Mayweather's fight with Conor McGregor when she earned a unanimous decision over Sydney LeBlanc in Las Vegas.
The 26-year-old British super-middleweight, who was signed by Mayweather Promotions earlier this year, convinced with her jab throughout the course of the four-round fight to secure a 40-36, 40-36, 40-36 victory on the three judges' scorecards.
America's LeBlanc was hurt by a vicious jab early in the third round, but responded only with largely-ineffective aggression as Marshall repeatedly demonstrated the rounded abilities that once made her such a promising amateur.
"I felt brilliant," the two-time Olympian said afterwards at the T-Mobile Arena. "I'm really glad it was three-minute rounds because I prefer that over two-minute rounds.
"She was really tough like I knew she would be. I'm glad that I got out of there with a win against a top class opponent."
There was also victory for the fighter considered Mayweather's protege, Gervonta Davis, who controversially stopped Francisco Fonseca in eight rounds.
The week had already been a poor one for the 22-year-old American, who on Friday was stripped of his IBF super-featherweight title after failing to make weight.
Towards the end of an unconvincing performance in which his attempts at showboating far from worked, he sent Costa Rica's Fonseca to the canvas when punching him behind the head in the eighth.
He then appeared to land again while he was down, after which Fonseca did not return to his feet and was counted out after 39 seconds.
Davis, a fighter for Mayweather Promotions, was fortunate not to have been disqualified, but will likely imminently fight again to recover the vacant title.
