I have a Matt Diaz 2010 bat that I purchased from the Braves, and it was sold to me with added info that it was used in a broken bat study. When was there another broken bat study? I know about the one in 2009 that lasted from July 2nd until late August but was there really another one in 2010? The bat has a MLB hologram but it's not in the database yet. There's pinetar that's still fresh and sticky so I'd assume that the bat came from August or September.

There's a sticker on the barrel just like the bats from the 2009 study. This sticker has "148-ATL-1" written in blue pen and "32.03"