Oakland Athletics became the first professional team in the professional baseball league (MLB) Tuesday, setting up a women's Justine Siegal.

Siegal will be one of the coaches responsible for developing young players from Oakland, who will be from 4. to 17. October to take part in the Instructional League, the MLB-nominated MLB championship.

"Justine will transfer her great experience to all of our young players," said David Forst, chief manager of Oakland A's. Forty-year Siegal is 2009. became the first woman to lead a professional baseball team, Brockton Rox.

Feminization is slowly taken over by American professional sports where training venues are highly specialized and men almost have a monopoly on them.

In basketball at NBA, former basketball player Becky Hammond entered history as the first woman to lead the team in the North American professional basketball league, San Antonio Spurse during the Summer League. Hammond has been assistant to Gregor Popovich, Spurs coach since last season.

In American football, Arizona Cardinals are preparing for the 2015 season. called Jen Welter, who became the first woman in the staff of a NFL team and was worried about the strategy of defensive linebackers. (Hina)