Irene Riggs, a Stanford-bound senior at Morgantown High in West Virginia, won the women's Under-20 6-kilometer title in 19:44.3 at the USATF Cross Country Championships at Pole Green Park in Mechanicsville, Va. Riggs, the first Nike Cross Nationals champion to also win the women's U20 crown, is eligible to compete for the United States at the World Athletics U20 Cross Country Championships on Feb. 18 in Bathurst, Australia.