I did a little crosswalk and compared Grissom with Justyn-Henry Malloy, who we traded for Jimenez. Both Grissom and Malloy have eaten up AAA this year, but questions arise as to whether they can be passable defensive players at the major league level. Malloy is a DH in AAA at age 23 and that, to me, says quite a bit.
Malloy is a year older and was a college player, so there is that to consider, but unless Grissom shows out defensively, I have to wonder what his value is. Malloy got us Jimenez. I don't know if Grissom gets the Braves that much more on his own.
Don't take my comments as a "Gee Whiz, we should never traded Malloy." I was just making a comparison between these two guys and what I see as similar challenges in determining their value.