No women will ride in Saturday's Kentucky Derby. That isn't unusual. Old race result charts (which are like box scores) show that since 1970, when Diane Crump became the first woman to start the Derby, only five other women have passed through the starting gate -- alongside 301 men. Since 2004, only one woman, Rosie Napravnik, has started any Triple Crown race -- and Napravnik retired three years ago. . . . Racing needs to fix its gender problem, and not just because it's unfair. . . . If young, stereotypically-masculine strength is required to compete, somehow that didn't prevent...