Black Book Xpress: Horses to Follow From Gulfstream Park, Aqueduct, Oaklawn and Santa Anita Park on February 14th, 2018

Aaron Vercruysse, Jeff Siegel and Richard Migliore highlight their top horses to keep an eye from an action packed week of racing across the country. This week's horses to follow include: Keg Stand, Duncastle, Apostle, Tilt, Tenfold, Magnificent QT, Tartini, American All Star and River Boyne.