Trainer Kieron Magee saddles Chief of Command (#1, ML 5-1) in Wednesday’s sixth race at Penn National, a six-furlong allowance. Since Jan. 1, 2014, Magee is winning at a 27 percent clip in dirt races, for a return on investment of $2.15. Check out the Positive ROI report as part of DRF Plus. Sign up for DRF Plus here.