From mlb.mlb.com, which sounds like that Black Eyed Peas song:
↵↵↵According to Elias Sports Bureau, no other manager in the top 100 in all-time wins finished his career with a postseason berth. Some of those skippers are still at the helm of their teams today, of course, and that assumes that Dusty Baker and Charlie Manuel will manage beyond this season. But as far as those who have hung it up, no one has done what Cox is doing.
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Wow. Here's the all-time top 100. Dozens and dozens of all-time greats weren't able to enjoy postseason success in their final seasons, but Bobby Cox is. Wow.