SANTA CLARA -- Upon further review, 49ers coach Jim Harbaugh still feels as if he made the proper decision in challenging the officials' ruling of a catch by Atlanta Falcons wide receiver Harry Douglas.

Douglas caught a pass from Matt Ryan late in the fourth quarter on the Falcons' final drive of the game, when they marched from their 35-yard line to midfield and faced a third-and-2.

Ryan lofted the ball to Douglas near the right sideline, with Douglas snaring the ball before he fell to the ground and got back up to complete a 22-yard gain.

Harbaugh felt as if the ball moved when Douglas hit the ground, which sometimes is enough for a play to be ruled an incomplete pass.

"I definitely think it was a worthy challenge," Harbaugh said.

The officials upheld the ruling, which gave the Falcons a first down and sent Harbaugh into a rage on the sideline.

The 49ers stopped the Falcons six plays later to seal the 28-24 victory.

"The ball hit the ground," Harbaugh said. "It definitely seemed like the ground helped (Douglas) make the catch."

The failed challenge cost the 49ers a timeout. In the end, the play didn't affect the outcome of the game, though.

"That will incur some interesting debate," Harbaugh said of the controversial play.