Gina "Boom Boom" Guidi, California native and resident of San Leandro, began boxing with her brothers at the Police Activities League as a teen and has been boxing for more than 18 years. Raised by a single mother in poor and violent surroundings, Gina Guidi struggled with poverty, substance abuse, domestic violence and her own sexual orientation. In the cramped gyms and battered boxing rings of San Francisco, she found her true calling and she would rise to the top ranks of women's professional boxing.

With an undefeated amateur record, she went professional in 1994. She was the first female boxer ever honored by the Northern California Veteran Boxers Association for Outstanding Achievement for 1996. She won the WIBF North American Superwelterweight title in September 1996, and the IFBA Middleweight World Title in February 1997. In 1998, the City of San Leandro, California named a day in her honor - March 16, Gina Guidi Day.

Gina trains three hours per day at King's Gym in Oakland, and also runs five miles each morning before work (a full-time position for a San Francisco company). She is an ardent animal lover and spends what little free time she has caring for her five dogs. She regularly donates time and money to non-profit organizations, including domestic abuse prevention and AIDS research programs.

On April 22, 2000, in Centennial Hall, Hayward, CA, Guidi defeated against one-belt champion Trina Ortegon of New Mexico in a ten-round match for the vacant International Women's Boxing Federation (IWBF) World Middleweight Championship title. Guidi won a Majority Decision over Ortegon in a ten-round bout that was described by WBAN reporter as" a barnburner all the way with both women showing that special courage when faced with an opponent that won't back down - The crowd gave a standing ovation after each round - The scorecards, 97-93, 97-93, and 96-96 - This fight would have been called one of the fights of the decade had it been videoed." Guidi's record is now 13-1-1 (5KO).

Guidi believes there are fewer gay women boxers than straight. Only twenty five percent of the boxers she has faced have been lesbians. Guidi does not believe women's boxing faces the same type of stigma that women's golf had endured for so many years when Ben Wright declared that the professional golf tour would not be successful because there were too many lesbians playing.