This weekend’s Louisiana Derby is the first of the big, final preps before the Kentucky Derby, and it is the focus of the Ron Flatter Racing Pod. Fair Grounds track announcer John G. Dooley co-hosts and helps to handicap the race. Trainer Mark Casse discusses his colt War Of Will, the favorite to win Saturday. There will also be a preview of Sunday’s Sunland Derby, another prep for Kentucky. The Racehorses by the Letters feature looks at the best ever starting with “T,” and there is a sampling of listener feedback. The Ron Flatter Racing Pod is available at Apple, Google Play, Stitcher and VSiN.com/podcasts.