ORLANDO (Florida) (AFP) - A requirement for players to be female at birth will be removed from the LPGA Tour constitution, commissioner Michael Whan said wednesday. Whan said players voted Tuesday night to make the change, which will be finalized in the coming weeks and would open the door to transgender players starting with the 2011 campaign. The move came in the wake of a federal lawsuit filed last October in San Francisco by Lana Lawless, a 57-year-old American who underwent a sex change operation to become a woman. Lawless claimed the female at birth requirement violated Californias civil rights laws and was seeking a ban on LPGA events until the tour changed the policy. The LPGAs first major championship every season, the two million-dollar Kraft Nabisco Championship, is staged in California.