Top Derby Pedigrees (Cont.)

Not what they seem: Horses by sprinters who have stamina influences

Balto Star -- Sire is sprinter Glitterman, but Glitterman's sire Dewan won 1 1/4-mile Brooklyn Handicap; great-grandsire in tail-female family is Stage Door Johnny; strong Greentree pedigree; fourth dam Musical Chairs produced Woodchopper, who finished a fast-closing second, beaten three-quarters of a length, in the Kentucky Derby; dosage index very low 1.81.

Burning Roma -- Sire is sprinter Rubiano, but Rubiano is by Fappiano out of a Nijinsky mare, so plenty of stamina regardless of sire's classification; broodmare sire Overskate a distance-oriented grass horse, by top-class 1 1/4 horse Nodouble; third dam Discipline top Wheatley Stable producer, family of Goodbye Halo, Awe Inspiring, Duty Dance, Mining, and Zilzal, so good combination of speed and stamina; DI 2.58

Hoovergetthekeys -- Sire is sprinter Mt. Livermore, who has already sired distance horses Peaks and Valleys (sire of Dollar Bill) and Mt. Sassafras, who defeated Skip Away in the 1 1/4-mile Gulfstream Park Handicap; broodmare sire Saros is by Sassafras, who defeated Nijinsky in the Arc de Triomphe; great-grandsire on tale-female is Ruthie's Native, winner of the Florida Derby; DI 2.50.

Notes of interest

Dollar Bill's third dam on tail-female is Dame Fritchie, granddam of mile and a quarter grade I winners Optimistic Gal and Bates Motel.

Invisible Ink's third dam Magic Singing is a half-sister to Belmont Stakes winner Quadrangle.

Jamaican Rum's paternal grandsire is Santa Anita Handicap winner Vigors; tail-female great-grandsire Norcliffe gives colt his versatility, having sired champion champion sprinter Groovy, as well as At the Threshold, third in the Kentucky Derby, who in turn sired Kentucky Derby winner Lil E. Tee.