Tapit’s World (#6, ML 3-1) takes on six in Wednesday’s eighth race at Delaware Park, the 1 1/16-mile Winter Melody Stakes. Since Jan. 1, 2014, trainer Michelle Nevin is winning at a 33 percent clip when saddling a horse switching from a sprint to a route, for a return on investment of $3.59. Check out the Positive ROI report as part of DRF Plus. Sign up for DRF Plus here.