Eri Yoshida play professionally in two countries. Her debut playing for the Chico Outlaws was on May 29, 2010. On Tuesday July 27, 2010, Yoshida made her first road start against the Victoria Seals of the independent Golden League in Victoria, British Columbia, making her the first woman in baseball history to pitch professionally in three different countries. Yoshida was honoured with a spot on "Venus Zine"'s "25 under 25" list of remarkable women for 2009. On August 21, 2010, she was the feature story on FOX Sports' "This Week In Baseball", where she was shown meeting her idol, Boston Red Sox
Chico Outlaws in major league history in hit a grand slam in his first at bat as he went deep to centerfield on the first pitch thrown to him. On June 1, 2010, Eri Yoshida, a 5 foot, 1 inch female knuckleball pitcher from Japan, pitched for the Outlaws. The Outlaws made history and defied the odds to sweep the Calgary Vipers to win the GBL North Division Title, then sweep Na Koa Ikaika Maui to capture their second GBL Championship in 2010, becoming the first team in league history to accomplish that feat, as well as going undefeated in the playoffs.