Trainer Joe Sharp saddles Frontier Scout (#8, ML 10-1) in Thursday's third race at Saratoga, a 6 1/2-furlong maiden claiming race. Since Jan., 1, 2014, Sharp is winning at a 31 percent clip in maiden claimers, for a return on investment of $3.62. Check out the Positive ROI report as part of DRF Plus. Sign up for DRF Plus here.