Levin is still returning to form following a back injury that sidelined her for the entire 2013 indoor season .
Tracey moved up a distance after competing for much of the season as one of the NCAA 's elite 400 - meter hurdlers .
Levin is still returning to form following a back injury that sidelined her for the entire 2013 indoor season , while Tracey moved up a distance after competing for much of the season as one of the NCAA 's elite 400 - meter hurdlers .