The injury came when he fell hard in practice. It sidelined him for the team's first preseason game. The back injury is not expected to linger for Graham.
The Saints need Graham after his breakout season in 2011. That year he caught 99 balls for 1,310 yards and 11 touchdowns. He quickly has become Drew Brees' favorite target in the New Orleans offense.
He is expected to make his preseason debut Thursday against the Jacksonville Jaguars.
For more on the Graham and the Saints, check out the SB Nation blog Canal Street Chronicles.