On August 23, 2011, before the waiver portion of the trade deadline had passed, Aaron Hill was dealt from the Blue Jays to the Diamondbacks in exchange for Kelly Johnson. It was something of a challenge trade, with two disappointing second basemen who had been productive in the past swapped for each other, in the hopes of reigniting whatever it was that made them appealing in the first place. While Johnson rebounded somewhat with the Jays, Hill made a full return to form, and now, after a strong 2012, is the owner of a three-year, $35 million extension that kicks in after this season.

How did Hill get from change-of-scenery candidate to a guarantee of over $40 million over the next four seasons, all in a matter of a year and change? That he's hit .304/.364/.517 in189 games with the Diamondbacks is the obvious answer, but there's more to Hill's performance than a simple rebound back to where he was expected to be following his breakout 2009. In fact, it's a little tough to declare that there was any real rebound here at all, at least not one that can guarantee the dark days of 2010 and 2011 are behind him forever.