Atlanta Braves prospect Evan Gattis tweeted this picture of he and Justin Upton from their 2002 USA Development team when they were 15 and 14 respectively. Gattis is number 14 on the top row, and Upton is seated on the bottom row, both circled below.
Gattis is next to number 16, Austin Jackson. Also on the team were Billy Butler and Homer Bailey.