It's hard to know about these guys because we don't really hear that much about their day-to-day activities, and we have little way to evaluate them in light of what a manager must do. Rowson, for instance, is probably pretty buddy-buddy with his hitters, so it's nearly impossible to guess whether he'd have what it takes to crack the whip now and then in a role as manager. Perhaps either Shelton or Pickler has had the occasion to crack a whip, but we wouldn't have seen that, and it's always easier to operate as someone's #2 than to be the final authority. And of course managing isn't all whip-cracking; running a rotation and a bullpen involve listening and inferring, and playing-time decisions for position players can be subtle. All of this is nearly impossible to know until the guy is given the chance. It's like taking the training wheels off the bike - totally different experience. Running a AAA team could be harder in some ways than running the big club, since probably two thirds of the roster doesn't believe they belong there. OTOH many managerial decisions come down from on high. Skinner is experienced, but you can also call that being "a retread". He's kind of old by now, and after a certain point I figure that too many teams have considered him and passed, so I expect he gets passed over again. Too bad if circular logic gets in the way of a man's career aspirations, though. The ideal candidate is probably in his 40s. Both Pickler and Shelton qualify - Pickler is only 42 and maybe too green, Shelton is 48 and probably this is his chance, before he's viewed as "getting too old" as well. So Shelton stands out to me among these internal candidates, but it's based on shaky information.