Trainer Andy Mathis saddles Katsfashion (#5, ML 6-1) in Wednesday's eighth race at Del Mar, a one-mile maiden claimer. Since Jan., 1, 2014, Mathis is winning at a 27 percent clip in maiden claiming races, for a return on investment of $4.29. Check out the Positive ROI report as part of DRF Plus. Sign up for DRF Plus here.