This shouldn't be possible ...
A.J. Green is a rare receiver who improves the play of anyone throwing him the ball, and it's receptions like this that show it.
Working against Javier Arenas (who is no slouch), Green shows unnatural body control to stay upright, and adjust in the air for this one-handed catch. There's no such thing as a wide or errant throw with A.J. in range. Simply throw it somewhere in his range and he'll get it. Moments like this are reminiscent of early Daunte Culpepper and Randy Moss plays, and it's clear here why Green often gets compared to the future Hall of Fame receiver.