As a general rule, you don't bring any highly-touted prospect into the majors unless you're prepared to give him a starting job. You don't want a guy like that rotting on the bench in the majors when he could be getting better in the minors. I haven't been following the Braves OF situation that closely but they already have Melky/McLouth/Hinkse right?
I'd let Heyward start in the minors, and bring him up if his performance demands it.
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