Does the trainer always pick the driver? Saw some pretty good drivers who were not in a race today and available and the driver used was driving in his only race he had on the card? Do not know if he is good, but I saw that Tetrick, Simons,Lachance, and Callahan were all available and drove in the previous race and the race after. Why wouldn't a trainer go with one of the better or more experienced drivers? Are drivers ever assigned and then the trainer is told?