Like Include, Concern was sired by Broad Brush, who led the American general sire list in 1994 largely on the strength of Concern's victory in the 1994 Breeders' Cup Classic (USA-I). Unfortunately, Concern was unable to parlay his racetrack success to a top stud career and is best remembered as the sire of two-time American champion steeplechaser Good Night Shirt. Concern spent the last seven years of his stud career at the Oklahoma Equine Reproduction Center, where he did his part in teaching veterinarians and veterinary students about equine reproductive science.
Domino's line has always skated on the thin edge ever since Domino himself died, leaving just 19 named foals. Yet from that tiny foundation, the "Black Whirlwind" built a dynasty including such historic names as Commando, Colin, Peter Pan, Black Toney, Blue Larkspur, Bimelech, Equipoise, Alsab, Ack Ack and Youth. Few stallions have contributed so much from so small a legacy.
The last hope for the Domino male line appears to rest with Include's sons Redeemed, winner of the 2012 Brooklyn Handicap (USA-II), and Sereno Inc., winner of the Premio Forli (ARG-II). Both are longshots to make a major impact and continue the line, but if either does, it won't be the first time that Domino and his descendants have beaten the odds.