Although breeding racehorses truly is a science, there really are no rules set-in-stone when it comes to choosing a stallion for your mare and attempting to get her in-foal in an efficient manner. Like most things though, some people are better at it than others, so TROT reached out to the three candidates for the 2022 O’Brien Award as Armstrong Breeder of the Year, and asked them a series of questions. Find out what Bob McIntosh, George Millar and Kelly MacMillan of Surdale Farms shared, as it pertains to their success as Standardbred breeders. By John Rallis.