What can be deemed as a good racer, is first what I'll explain. A winner doesn't mean it's a good racer, I've had many one hit wonders in the past never to take a card again, a good racer is a bird who wins and scores multiple times. A good breeder in my eyes is a bird who breeds the pigeons who score multiple times, but they must breed this sort more then once. Do I believe a breeder, may be the duff brother and sister, I'd say it defiantly could be But I also believe the winning gene can skip a generation, the winner himself may not breed winners but his children may. But I must add I like at least one winner in each generation, so the duff brother or sister would be paired to a proven racer.