Lauren Price picked up a unanimous points victory over Icelandic fighter Valgerdur Gudstensdottir on her professional debut at Wembley Arena.
The Olympic middleweight champion from Tokyo won 60-54 after six two-minute rounds in the welterweight division.
Former kickboxing world champion and ex-Welsh international footballer Price started confidently from the first round.
Gudstensdottir was slow to get going and relied on a few big punches, but Price dominated throughout, using good hand speed to take the fight to the final round and take the win.
Price paid tribute to his supporters, and in particular his grandparents.
“Definitely (that was all I hoped for),” she told Sky Sports.
“I just wanted to relax while I was there and not rush my work, have six laps under my belt and here we go again.”
She added: “(It was) absolutely amazing. I would like to thank everyone who supported me, who bought tickets to come see me, and I also really enjoyed the walk in the ring, my first , so I’m in turmoil.
Price’s grandma is due to watch the fight in the morning and when asked for a message, Price said: “Just that I love her and if it wasn’t for her and my grandpa I wouldn’t. would have accomplished nothing in my life.”