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When he broached the subject of Hultzen competing for a job in ST, he brought up the whole "first we have to see what he looks like in a pro uniform" caveat.
That covers all of those 9,000 technical jobs like the stretch that you mention.
Funny - ballplayers make it look easy out there :- ) but there is just no telling how many details they have to get right even before they throw the ball toward home plate.