Peter Gammons doesn't tweet a lot, but when he does the Earth trembles. Here is his latest tweet on the subject of a possible Justin Upton trade between the Atlanta Braves and the Arizona Diamondbacks:

One voice on Braves package for Upton Delgado, Gilmartin, Spruill

— Peter Gammons (@pgammo) January 24, 2013

First impression is "WOW, that's all." I mentioned yesterday that I thought the Braves would do their best not to trade Julio Teheran, and they also seem very hesitant to trade J.R. Graham. The above package would equate to a "steal" of a trade for the Braves. Even if Atlanta included shortstop Nick Ahmed, that would still be a very good trade for Atlanta.

I'm a fan of all three of the above pitchers, especially Randall Delgado, but Sean Gilmartin and Zeke Spruill are mid-to-back of the rotation starting pitching prospects, whereas Teheran and Graham are mid-to-front of the rotation starting prospects. There's a big difference there.

Peter Gammons usually has pretty good sources. So I believe him much more than I believe others.