17-year-old track star Mary Cain bypasses college track, goes pro

It is a noble attempt, but there is little doubt that if Cain meets her goals, she will, indeed --and quite possibly forever -- be known as Mary the runner.

Mary Cain became the youngest athlete ever to represent the U.S. at the world championships in Moscow this summer :: Jonathan Ferrey/Getty Images

It is a noble attempt, but there is little doubt that if Cain meets her goals, she will, indeed --and quite possibly forever -- be known as Mary the runner.