There is a reason why B.J. Upton is a member of the Braves and his brother Justin is not.

Arizona and Atlanta have engaged in trade talks involving Justin Upton, but the Diamondbacks insist on receiving Andrelton Simmons from the Braves in any package.

Simmons is a shortstop in the Atlanta system. He entered the 2012 season as the team's fourth-best prospect.