Star women's soccer players, including Alex Morgan, Marta, Lindsey Heaps, Crystal Dunn and U.S. youth captain Kennedy Fuller, have written an open letter to FIFA asking global football's governing body to include the Under-20 Women's World Cup in its international calendar. The players' request for the tournament to be moved to a date that falls within an international window would require clubs and universities to release players who have been selected for a U-20 World Cup roster, according to