This is the latest update from Jon Heyman. Burnett is officially a Pittsburgh Pirate. I usually trust Jon Heyman because 9 times out of 10, he's right. But it all goes back to what I spoke about in an earlier post about how "sources" are not always right. The reality is no one truly knows. It really is a guessing game sometimes. Here is Heyman's tweet below:Read WHY THERE MAY ONLY BE ROOM FOR ONE, a piece I wrote just a short time ago. I wrote that Wally Matthews of ESPN (HERE) originally said the deal wouldn't come down until Tuesday and he's quoted below as to his reasoning:"The Yankees and Pirates are in full agreement on the terms of the A.J. Burnett deal, but they still need the approval of Big Brother Bud Selig before Burnett officially becomes a Buc. That approval was not given...

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