At 34, 'Mommy Rocket' Fraser-Pryce sprinter to beat in Tokyo

Every time Shelly-Ann Fraser-Pryce steps on the track, some sort of record is in jeopardy. At the top of that list, of course, is Florence Griffith Joyner’s 33-year-old mark in the 100 meters. At the upcoming Olympics, Fraser-Pryce, the 34-year-old mother from