'TDN Rising Star' Dortmund (Big Brown) looks to solidify his spot atop the list of 2015 GI Kentucky Derby contenders in the GI Los Alamitos Futurity. T.D. Thornton covers a potential major issue that could halt New York racing, as well as the CHRB's investigation of horse deaths linked to rat poison. Churchill Downs names its next announcer. Bill Finley discusses the race for champion 2-year-old, Diego Mitagstein profiles comebacking rider Jacinto Herrera, and Alix Choppin discusses the strong 2015 class of stallions standing in France. All that and much more in today's TDN!