According to David O'Brien of the Atlanta Journal-Constitution, the Tigers acquired outfielder Josh Anderson from the Braves for minor league pitcher Rudy Darrow.
Darrow, 24, is a former college wrestler who is listed at 5'10", 180 lbs. The Tommy John survivor uses a sidearm delivery to touch 94, and Baseball America suggests he could pitch in the Majors this year. As such, it seems odd that the Tigers would trade him.
The speedy Anderson was unable to win the Braves' center field job, which presumably goes to Jordan Schafer now.