Can Pete Rose, Casey, Jackie come back again and play ball?

Listener alert: the following has nothing to do with performance-enhancing drugs.  “PED”s, as we call them, are so yesterday.  Today's question is: why bother pumping up a mediocre player with drugs when you could go out and clone, say, Nolan Ryan?  An exact copy of a Great One's genes, and I'm not talking about Levi's.  Greatness at the molecular level.  The world got interested in cloning when those guys made a duplicate Dolly-the-sheep, but the sports world wasn't impressed (sheep don't figure in a lot of sports) until it occurred to breeders that a copy of a big-time race horse might be a big-time winner all over again.  Secretariat versus Seattle Slew versus Affirmed, or facsimiles thereof, all in the same race?  This is not science fiction; people are cloning horses and the American Quarter Horse Association, just lost a decision in Court and will now have to register cloned horses. Now, the thoroughbred horse people are even more picky about what constitutes a legitimate horse, but Judge Mary Lou Robinson has seen the future and it's a Kentucky Derby featuring a dozen versions of the same horse.  it only takes 2 years to make a race horse while it would take at least 18 to get an exact copy of Michael Jordan ready for the NBA draft.  On the other hand, a team with a Jordan, two Kobe’s, three Shaq's, and a Larry Bird might be worth waiting for.