Ronda Rousey, 25, makes Forbes' "30 under 30" list in Sports. "Rousey, generally considered the world's No. 1 women's pound-for-pound MMA fighter, was previously the first U.S. woman to win an Olympic medal in Judo. Her dreaded armbar move has kept her undefeated." Should come as no surprise, considering "Rowdy" has made just about every recent list imaginable.